Beer Yeast Starters, Culturing & Nutrients

Use this yeast nutrient as your "secret weapon" when your yeast starts to lag or you just want to ensure a vigorous ferment! Supplementing with yeast nutrients reduces lag time and give the yeast a boost during sluggish or stuck fermentations. Wyeast Yeast Nutrient gives your yeast a great start during propagation and provides the nutrients needed to maintain a healthy, active ferment: a blend of vitamins, minerals, inorganic & organic nitrogen, zinc, phosphates, and other trace elements that will benefit yeast growth and complete fermentation. To use, simply dissolve in warm water and add the solution to your kettle 10-15 minutes before the end of the boil. Use ½ tsp (2.2 grams) per 5 gallons (19 liters) of wort. Wyeast Yeast Nutrient will remain stable for 1 year if stored in an airtight container in a cool environment.

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Make a yeast starter in no time flat using premade, condensed wort—just mix with water and add yeast! Skip the messy, time-consuming process of making a yeast starter with DME—no boiling or cooling required Keep Propper Starter™ on hand for whenever brewing inspiration strikes—shelf stable for 2 years with no need to refrigerate Propper Starter™ is condensed wort in a can, allowing you to make a yeast starter in minutes! No need to make a mess in the kitchen measuring out DME, and no need to waste time boiling and cooling before you pitch your yeast. Simply open a can of Propper Starter™, pour it into your flask along with 16 oz of bottled or distilled water, then add your yeast. It's that simple! One can of Propper Starter™ with 16 oz of water will make a 1L starter with a gravity of 1.040. It is recommended to use the 1:1 dilution rate, regardless of the original gravity of your wort. Making a proper yeast starter will offer higher cell counts at the time the yeast is pitched, leading to faster, healthier fermentations and better tasting beer! They're especially recommended for lagers and any beer that has an original gravity of 1.060 or higher. Instructions: Sanitize flask, stir bar, top of can and yeast pack Swirl and open can, then pour contents into flask Add 16 oz of bottled or distilled water to flask Pitch yeast and swirl flask to mix Add stir bar to flask, cover with foil, and mix on stir plate* Recommended Use: For high gravity beers (1.060 OG or higher) For cold pitching lagers For yeast packs that recommend a starter For yeast packs nearing expiration Ingredients: water, barley malt extract, yeast nutrient   Shelf life of 24 months. Refrigeration not required.   *Note: the use of a stir plate is not required for making a yeast starter, but is highly recommended, as it will further increase cell count through continuous aeration. For recommended stir plates and Erlenmeyer flasks, see below under "You Might Also Need".  

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Smart brewers know that a yeast starter is the best way to ensure proper cell count and yeast viability prior to pitching. If you want a reliable starter for your batch of beer, you need to feed the yeast. Adding a yeast nutrient to the starter will give the yeast an added boost! Fermaid K is a yeast nutrient that works for starters and main fermentation. Here’s how it works:   Fermaid K is a complex formula that provides DAP, free amino acids, yeast hulls, unsaturated fatty acids, sterols; and micronutrients such as magnesium sulfate, thiamin, folic acid, biotin, calcium pantothenate, and other vitamins and minerals. Yeast use Nitrogen for protein synthesis and to maintain cellular growth. Nitrogen from the alpha amino acids contained in Fermaid K is utilized much more efficiently than from the ammonia salts like DAP. The unsaturated fatty acids and sterols available in Fermaid K are important survival factors needed to maintain alcohol resistance. They also help keep volatile acidity levels low. The cell wall fractions, available through the included yeast hulls, absorb medium chain fatty acids that are toxic to the yeast. They also provide nucleation sites to help keep the yeast in suspension. You do not need to add any additional fertilizers or DAP when adding Fermaid K. Use approximately 1 gram per gallon. Rehydrate in distilled water.   A rough approximate of weight is 1 tsp = 4.7 grams. We highly recommend using a scale to weigh the product for an accurate dose.   For a similar product check out CellarScience® FermFed Yeast Nutrient!    

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White Labs Yeast Nutrient is used to help increase the health of your yeast.  Healthy yeast is vital for a clean and complete fermentation, which will also help to prevent off-flavors in your homebrew. Contains diammonium phosphate, essential vitamins and co-factors, nitrogen (amino acids, proteins, and peptides) and minerals. The White Labs Yeast Nutrient provides an effective boost for first and/or late generation yeast slurry. If grist is not 100% malt, then yeast nutrient can help make up for lack of nutrients. For commercial use, each package contains 1.0 oz, enough for 5bbls. For homebrew use, each 1/2 tsp. from the package is good for 5 gallons.

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Propper Seltzer is specially formulated to power your favorite beer yeast through a healthy sugar-based fermentation in as little as 7 days. One dose per five gallons will provide all the nutrients needed for a quick, successful batch of hard seltzer. For an even faster fermentation, we recommend Omega Yeast's Lutra™ Kveik strain, which can get the job done in as little as 4 days' time.  One (1) pack provides yeast nutrient for (5) five gallons of sugar wort at 1.060 (15°P) or lower. Recommended for use with these strains: Lutra Kveik Hornindal Kveik Voss Kveik Espe Kveik Directions: Add sugar to hot water and stir to dissolve. Boil for 10 min, measure gravity and adjust. Once desired gravity is reached, turn off the heat source and add Propper Seltzer nutrient. Transfer sugar base to the fermenter at desired ferm. temp. Aerate by shaking or oxygenating. Pitch your favorite Omega Yeast strain and let it roll.  

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Due to high demand, the case of 100 is currently out of stock. Be the first to receive your items by placing a pre-order today. We will automatically ship this to you when we receive more inventory.   Use this foam stopper with your Erelenmeyer flask when making a yeast starter. Aeration is an important aspect of making a strong, healthy starter. This is why we recommend using a stir plate, which provides continuous aeration. This foam stopper will allow air to flow freely into your flask while keeping pesky bugs and other contaminants out. A quick spray down with sanitizer is all you need. Suitable for flasks or other vessels with an inner diameter opening of 35-45mm (1-3/8" - 1-3/4"). Reusable Resists alcohols, bases, esters, and dilute acids Autoclavable up to 249°F (121°C).

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Give your yeast an added boost with this yeast nutrient.   Diammonium Phosphate (DAP) is a good source of nitrogen for yeast. The added nitrogen will help the yeast will remain active through the ferment. Use 1/2-3/4 gram per gallon (1/2 tsp per 5 gallons).   A rough approximate of weight is 1 tsp = 3.1 grams. We highly recommend using a scale to weigh the product for an accurate dose. We do not recommend relying on these rough conversions for accurate dosage rates.

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100% Natural Yeast Nutrient: FermFed DAP Free is a fully organic nutrient blend, derived from yeast autolysis, rich in amino acids, vitamins, and essential minerals like zinc and magnesium, ensuring optimal yeast health for successful fermentations. Organically Derived Nitrogen: Unlike traditional nutrient formulations containing inorganic diammonium phosphate (DAP), FermFed DAP Free provides organic nitrogen, reducing the risk of off-flavors and promoting a cleaner fermentation. Ideal for Hard Seltzer and Beer Fermentations: FermFed DAP Free is the preferred nutrient for hard seltzer fermentations and works well in beer, promoting healthy yeast activity even in high alcohol fermentations (up to 10% ABV). Comprehensive Yeast Protection: The blend includes sterols for alcohol and temperature resistance, mannoproteins to retain aromas, and essential B-vitamins, zinc, and magnesium to support yeast performance and prevent stuck fermentations. The ideal nutrient blend for beer fermentations, FermFed DAP Free is a 100% natural formulation derived from the autolysis of very specific yeast strains naturally high in free amino acids, sterols, mannoproteins, zinc, magnesium, and niacin, along with vitamins B1, B2, B5, B6, and B12 for a complete yeast health regimen.  As the name suggests, this unique formulation does not contain the traditional inorganic diammonium phosphate, but does provide organically derived nitrogen. Help your yeast start fermentation on the right foot with FermFed DAP Free by CellarScience®. FermFed DAP Free vs Regular FermFed Regular FermFed contains DAP, diammonium phosphate, which is an inorganic nitrogen source. If you know your fermentation needs nitrogen, typically in non-malt fermentations such as wine, DAP is more readily processed by the yeast than the organic nitrogen found in FermFed DAP free. However, if the DAP is not processed by the yeast, and left behind in the beer, there is a higher risk of off flavors. At the suggested usage rates, FermFed DAP Free provides 30ppm of organic FAN, Free Available Nitrogen, while FermFed provides 38ppm of inorganic FAN.  For Use in Hard Seltzer We have found that FermFed DAP Free is the preferred nutrient mix for Seltzer fermentations, with the organic nitrogen component being more than enough nitrogen to support a healthy fermentation. For high alcohol fermentations closer to 10% ABV, multiple additions of FermFed DAP free are required.   How Much Do I Add and When? The general recommendation for most beer fermentations is to add 1.5 grams per gallon. Mix the nutrient in a small slurry of water and add to the fermentation prior to pitching yeast.   How it Works The different components of FermFed DAP Free work in different ways to feed and protect your yeast.   The complex and organic nitrogen in FermFed DAP Free helps eliminate excessive yeast growth in the initial phases helping to reduce fermentation heat spikes at the start of fermentation.  Included sterols make the yeast membrane more resistant to alcohol and to high temperatures.  The collection of B-vitamins along with zinc and magnesium are essential for enzymatic activity, alcohol tolerance, and yeast health.  Mannoproteins help avoid the aromatic stripping during the fermentation by binding esters and terpenes and not allowing them to be driven off by CO2.  The included yeast hull components act as receptors to bind up fatty acids that can accumulate and cause stuck fermentations. For a full yeast nutritional plan, use FermStart when rehydrating yeast.

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This Erlenmyer flask is huge, coming in at 5000 ml (5L!), making it the ideal vessel to make a large yeast starter for a 10+ gallon batch. The best brewers make large yeast starters to get their beer fermenting fast, and most of them do so in an Erlenmeyer flask. Large populations of active yeast help ensure flavorful beer free of off flavors. Because this flask is made from borosilicate glass you can move it from a boil into a cold water bath for cooling. This means you can do the whole process in one container, keeping it simple and helping to reduce the risk of contamination when transferring from one container to another. Double Boiler Method It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Morebeer! recommends using the "double boiler method." This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask. All you need is a kettle 3 gallons or larger. This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you safe. Safety First: Please take us up on a great deal - save $14.95 when you purchase a 5000ml flask and our BE300 5 gallon stainless steel kettle at the same time. Use Promo code SAFETY1 at checkout. Features Massive 5L (5000ML) Capacity Made from Borosilicate Glass (also known as Pyrex) Fantastic price for a flask of this size Produced for MoreBeer!   Why make a yeast starter? (from our FAQ) We build starters for 3 main reasons. First, to ensure yeast health. By making a starter 1-3 days in advance, you ensure that your yeast is healthy and strong and ready to do its job. Second, to create more yeast. By making the starter you will increase the cell count of the yeast, giving you a better chance of keeping bacteria's and wild yeasts from fermenting your wort. Third, if you are making high gravity beers. If you are making a high gravity beer (1.060+) you will need more yeast to start the ferment faster. High gravity beers will also finish more completely when you pitch ample quantities of yeast. In the lab world, these flasks are known as "Student Grade". Student grade flasks may have small scratches and air bubbles. A great flask for making yeast starters! For a stopper we recommend a size #8-9 (FE498 or FE499). Kegland Part Number: KL04008

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Improve the quality of your yeast starters with this compact magnetic stir plate. Aeration is an important factor in making a yeast starter, and without the stir plate you'll need to pick up and swirl your starter by hand as often as possible. Drop the included stir bar into your Erlenmeyer flask, set it on the stir plate, and let it do the work for you!   Features: On/Off switch Adjustable speed control dial Accommodates flasks up to 5000ml in size Stir bar included 4 ft. long cord Plate measures 4.75" in diameter Dimensions: 7" L x 6" W x 4.25" H Kegland Part Number: KL07061

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Enhanced Yeast Performance: FermStart provides a concentrated blend of micronutrients, including amino acids, sterols, and vitamins, which helps yeast transition quickly from dormant to active, ensuring a healthy and robust fermentation process. Faster Fermentation Start: By supplying readily assimilable nutrients, FermStart allows yeast to skip energy-consuming steps, promoting faster yeast cell multiplication and out-competing wild yeast, ensuring your selected yeast dominates the fermentation. Strong Cell Membrane Support: Sterols in FermStart help yeast cells maintain membrane elasticity, enhancing their ability to survive and perform well under tough fermentation conditions, ensuring consistent fermentation results. Antioxidant Protection: The inclusion of glutathione, a powerful antioxidant, helps protect yeast cells from oxidative damage during rehydration, improving yeast health and promoting a more stable and efficient fermentation process. If you’re rehydrating beer yeast, it’s quick and easy to ensure a perfect ferment by adding FermStart by CellarScience®.  FermStart is a concentrated micronutrient blend that helps yeast during the critical phase in which they transition from dried and dormant back into healthy and active.  FermStart is added to your rehydration water so that your yeast absorbs the nutrients as they absorb the water.  When gravities exceed 15° Plato or 1.060 starting gravity, it is recommended to rehydrate your yeast.  To ensure a perfect ferment that reaches its full flavor potential, rehydrate your yeast with FermStart. How Much? FermStart is a super concentrated formula, which is very convenient when you are rehydrating large amounts of yeast.  Use 1 gram of Fermstart for every 4 grams of yeast.  We offer some suggested ranges for the amount of water to use below.  Examples: 12g yeast - Add 3g FermStart to roughly 50ml of water 500g yeast - Add 125g FermStart to roughly 1500 ml of water The Science of How it Works FermStart is rich in readily assimilable amino acids, sterols, vitamins, and natural glutathione.  Readily assimilable means that the size of the molecules present in FermStart are extremely small and easily absorbed by the yeast cell. This is obtained by centrifuge and allows FermStart to be extremely concentrated and not contain filler. The availability of readily assimilable amino acids allows the yeast cell to skip the step in which amino acids would be synthesized within the cell. This saved energy is instead directed into multiplication. Faster yeast cell multiplication means a faster start allowing your yeast to out-compete wild yeast. Wild yeast have unknown flavors and fermentation behavior so it is important to give the yeast you selected the best chance to dominate the fermentation. Sterols help the cell membrane regain and maintain elasticity helping to ensure a perfect start and continued performance throughout the fermentation. The strong cell membrane helps ensure that the yeast can survive and complete alcoholic fermentation under tough conditions. Glutathione is a very special natural antioxidant and detoxifier made up of three amino acids cysteine, glutamate, and glycine.  It is extremely important for maintaining intracellular health by preventing damage to cellular components during the very oxidative process of rehydration.

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Comprehensive Yeast Nutrition: FermFed provides a complex blend of essential nutrients like diammonium phosphate (DAP), thiamin, amino acids, sterols, and vitamins (B2, B5, B6, B12), supporting yeast health and optimizing fermentation. Prevents Off-Flavors: FermFed’s nitrogen content helps prevent the production of undesirable compounds like hydrogen sulfide (rotten eggs), ensuring cleaner and more desirable flavors during fermentation. Enhanced Fermentation Performance: Ingredients such as sterols and mannoproteins promote yeast cell strength and improve the retention of aromatic compounds, helping yeast finish fermentation smoothly while enhancing flavor retention. Versatile Application: Ideal for wine and non-malt fermentations with known nitrogen deficiencies, FermFed is also available in a DAP-free version suitable for malt-based fermentations with unknown nitrogen levels. FermFed is a complex nutrient blend of diammonium phosphate, thiamin, amino acids, sterols, pantothenic acid, mannoproteins, protective microelements derived from yeast hulls, and vitamins B2, B5, B6, & B12.  FermFed also contains the organic and inorganic nitrogen (DAP) that yeast need. Help your yeast reach the end of fermentation safely while producing amazing flavors with FermFed by CellarScience®. FermFed is a great choice for wine and other non-malt based fermenations where there is a known nitrogen deficiency. For beer or other fermentations where nitrogen levels are unknown we recommend FermFed DAP Free.  The organic nitrogen supplied in FermFed DAP Free is sufficient for all malt fermentations and poses less potential issues if not consumed by the yeast. Read more about FermFed DAP Free. How Much Do I Add and When? For most beer fermentations add 1 gram per gallon. Mix the nutrient in a small slurry of water and add to the wort just prior to pitching yeast. How it Works The different components of FermFed work in different ways to feed and protect your yeast.  When yeast do not have enough nitrogen, they are more likely to produce hydrogen sulfide (rotten eggs). FermFed helps to eliminate this problem by providing enough nitrogen for most situations.    As yeast divide and multiply they get weaker and might not be able to properly finish fermentation as the alcohol content rises. Feeding them sterols help cells maintain membrane fluidity so that the yeast can properly function.   Mannoprotein molecules bind esters and terpenes and work as an anchor to keep them in solution so they are not driven off by CO2 during fermentation.  Pantothenic acid is added to help reduce the production of hydrogen sulfide.   Thiamine is important for yeast metabolism.  Vitamins B2, B5, B6, & B12 are important for general yeast health. For a full yeast nutritional plan, use FermStart when rehydrating yeast.

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These Erlenmeyer flasks help the best brewers to make large yeast starters to get their beer fermenting fast. Large populations of active yeast help ensure a healthy fermentation, free of off flavors.  One of our favorite things about the Erlenmeyer flasks is that you can boil your starters directly in them! Our large 2000ml Erlenmyer Flask is the ideal vessel to make a large yeast starter for 5 gallon lagers and high gravity brews. Because it is made from borosilicate glass you can move it from a boil on your gas stove into a cold water bath for cooling, without the risk of cracking. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.) This means you can do the whole process in one container, keeping it simple and helping to reduce the risk of contamination when transferring from one container to another. Recommended Process for Use of Flask: Double Boiler Method It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly. Morebeer! recommends using the "double boiler method."  This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask.  All you need is a kettle 3 gallons or larger.  This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.   Features Massive 2L (2000mL) Capacity Made from Borosilicate Glass Fantastic price for a flask of this size Produced for MoreBeer! 6.5" base 2.5" top 10.75"H   Why make a yeast starter? (from our FAQ) We build starters for 3 main reasons. First, to ensure yeast health. By making a starter 1-3 days in advance, you ensure that your yeast is healthy and strong and ready to do its job. Second, to create more yeast. By making the starter you will increase the cell count of the yeast, giving you a better chance of keeping bacteria's and wild yeasts from fermenting your wort. Third, if you are making high gravity beers. If you are making a high gravity beer (1.060+) you will need more yeast to start the ferment faster. High gravity beers will also finish more completely when you pitch ample quantities of yeast. In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters!(Student grade is not the highest grade flasks and will have minor defects) Kegland Part Number: KL03988

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The Deluxe Yeast Starter Kit will have you making top shelf yeast starters right out of the box. Yeast starters offer higher cell counts at the time the yeast is pitched, leading to faster, healthier fermentations and better tasting beer! Any beer will benefit from a yeast starter, but they're especially recommended for high gravity beers and cold fermenting lagers. This kit includes step-by-step instructions for making a 2L starter, as well as some fantastic upgrades that set it apart from our standard Y320 starter kit. Once you've prepared the starter, sanitize and drop in the stir bar, install the foam stopper, and place the flask on the magnetic stir plate. Turn the dial up until a shallow vortex forms. Magnetic Stir Plate A stir plate will greatly improve the quality of your yeast starter by providing continuous aeration. Yeast need oxygen to produce sterols and multiply. When all the available oxygen is used up the yeast will stop reproducing. Using a stir plate will ensure that your yeast have all the oxygen they could ever want and they'll be able to reproduce as much as possible. Foam Stopper Many yeast starter kits include a rubber stopper and airlock, but we believe a foam stopper is the clear choice. The foam stopper will allow air to flow freely into your flask while keeping pesky bugs and other contaminants out. Simply spray or dunk the stopper in sanitizer before installing it. If you're going to store the starter for a couple days after its finished, remove the foam stopper and cover the flask with sanitized aluminum foil. Foam Axe Foam Axe from CellarScience® is a uniquely formulated anti-foaming agent which reduces surface tension so bubbles are Axed before they can form.  Foam Axe can be used in the kettle to help prevent boil-overs and works great in your fermenter or starter flask to reduce Krausen—stopping your viable yeast from fermenting out the top of your vessel. Just one drop in your flask is all you need. Flask Marker This wax pencil is used for writing on glass surfaces and washes off easily. Great for labeling and writing notes on your yeast starter. Kit Includes: 2000 mL Erlenmeyer flask (student grade) Magnetic Stir Plate (stir bar included) Foam Stopper 1/2 lb Dried Malt Extract 1 oz Fermaid K yeast nutrient 1 oz Foam Axe foam control Flask Marker wax pencil In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flasks and will have minor defects)

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The best brewers make large yeast starters to get their beer fermenting fast. Large populations of active yeast help ensure flavorful beer free of off flavors. Our large 3000ml Erlenmyer Flask is a great vessel to make a large yeast starter for 5 gallon lagers and high gravity brews. Because it is made from borosilicate glass you can move it from a boil on your gas stove into a cold water bath for cooling, without the risk of cracking. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.) This means you can do the whole process in one container, keeping it simple and helping to reduce the risk of contamination when transferring from one container to another. Recommended Process for Use of Flask: Double Boiler Method It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly. Morebeer! recommends using the "double boiler method."  This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask.  All you need is a kettle 3 gallons or larger.  This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.   Features Massive 3L (3000mL) Capacity Made from Borosilicate Glass Fantastic price for a flask of this size Produced for MoreBeer! " base " top "H   Why make a yeast starter? (from our FAQ) We build starters for 3 main reasons. First, to ensure yeast health. By making a starter 1-3 days in advance, you ensure that your yeast is healthy and strong and ready to do its job. Second, to create more yeast. By making the starter you will increase the cell count of the yeast, giving you a better chance of keeping bacteria's and wild yeasts from fermenting your wort. Third, if you are making high gravity beers. If you are making a high gravity beer (1.060+) you will need more yeast to start the ferment faster. High gravity beers will also finish more completely when you pitch ample quantities of yeast. In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters!(Student grade is not the highest grade flasks and will have minor defects) Kegland Part Number: KL03995

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A stir bar is definitely something you'll want to have a spare of!  Seasoned homebrewers know the value of being prepared and having spare parts. This 1" magnetic stir bar works great as a great backup or as a replacement.   Whether you need to make an extra starter, or you accidentally pitch the slurry with the magnet bar still inside, or just plain lose it you’ll be relieved to have an extra magnetic stir bar on hand.   One inch in length.

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Yeast starters offer higher cell counts at the time the yeast is pitched, leading to faster, healthier fermentations and better tasting beer!   You may be wondering how to make a yeast starter.  Well, lucky for you this kit contains everything you need for making your own yeast starter right out of the box, including step-by-step instructions!   This is the most common size used to make yeast starters using liquid yeast, great for higher alcohol beer and cold fermented lagers.   In the lab world, these flasks are known as "Student Grade," meaning there may be some cosmetic flaws in the glass, and the volume measurements are approximate due to variations in the thickness of the glass walls of the flask. This makes it a great flask for making yeast starters--at a great price!   We do not recommend the use of an electric element with these flasks. If this cannot be avoided, we suggest using a larger pot as a hot water bath on the stove.

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Seasoned homebrewers know the value of being prepared and having spare parts. This 2" Magnetic Stir Bar works great as a backup or as a replacement. The best choice for large flasks.    Whether you need to make an extra starter, or you accidentally pitch the slurry with the magnet bar still inside, or just plain lose it you’ll be relieved to have an extra bar on hand.    Two inches in length.   Note: This stir bar may not be compatible with all stir plates, depending on the alignment and distance between the internal rotating magnets. Compatible with stir plates Y700 and Y705

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The best brewers make large yeast starters to get their beer fermenting fast. Large populations of active yeast help ensure flavorful beer free of off flavors. Our 1000ml Erlenmyer Flask is the ideal vessel to make a large yeast starter for 5 gallon batches. Because it is made from borosilicate glass you can move it from a boil on your gas stove into a cold water bath for cooling, without the risk of cracking. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.) This means you can do the whole process in one container, keeping it simple and helping to reduce the risk of contamination when transferring from one container to another. Recommended Process for Use of Flask: Double Boiler Method It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly. Morebeer! recommends using the "double boiler method."  This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask.  All you need is a kettle 3 gallons or larger.  This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.   Features 1L (1000mL) Capacity Made from Borosilicate Glass Fantastic price for a flask of this size Produced for MoreBeer!   Why make a yeast starter? (from our FAQ) We build starters for 3 main reasons. First, to ensure yeast health. By making a starter 1-3 days in advance, you ensure that your yeast is healthy and strong and ready to do its job. Second, to create more yeast. By making the starter you will increase the cell count of the yeast, giving you a better chance of keeping bacteria's and wild yeasts from fermenting your wort. Third, if you are making high gravity beers. If you are making a high gravity beer (1.060+) you will need more yeast to start the ferment faster. High gravity beers will also finish more completely when you pitch ample quantities of yeast. Fits our stopper 8 (FE455) In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters!(Student grade is not the highest grade flasks and will have minor defects) Kegland Part Number: KL03971

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Yeast starters offer higher cell counts at the time the yeast is pitched, leading to faster, healthier fermentations and better tasting beer!   This kit contains everything you need for making your own yeast starter in package. When you’re ready to make the move from direct pitching your yeast to making a proper starter, this kit is a great way to get going.    The most common size used to make starters using White Labs brand yeast. Same as our Y300 Starter Kit, but with a 1000ml Erlenmeyer flask instead of the 500ml. In the lab world, these flasks are known as "Student Grade," meaning there may be some cosmetic flaws in the glass, and the volume measurements are approximate due to variations in the thickness of the glass walls of the flask. This makes it a great flask for making yeast starters--at a great price!   We do not recommend the use of an electric element with these flasks. If this cannot be avoided, we suggest using a larger pot as a hot water bath on the stove.

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500ml Erlenmeyer flask, 1/2lb light dried malt extract & 1oz Fermaid K (Yeast Nutrient). This starter kit is for growing liquid yeast starters. The idea is that the starter acts as a mini batch of beer where the yeast cells replicate before being pitched into your 5 gallon batch. More yeast means fermentation starts faster. The bacteria and wild yeast that got into your beer during the transfer from kettle to fermenter have less chance of creating a negative flavor impact upon your beer. (We do not recommend the use of an electric element with these flasks. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.) In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters!(Student grade is not the highest grade flasks and will have minor defects)

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A magnetic stir plate is a great investment to help improve the quality of your yeast starters. Aeration is an important factor in making a yeast starter, and without a stir plate you'll need to pick up and swirl your starter by hand as often as possible. The stir plate is a simple solution that will continuously aerate your starter, leading to higher numbers of viable yeast. This compact stir plate works with Erlenmeyer flasks up to 5000mL in size. Depending on the volume of your yeast starter, you can use the adjustment knob to dial in the speed of the stir bar. We recommend using just enough power to keep yeast in suspension, a full vortex isn't really necessary. Stir bar included.   KegLand Part Number: KL05555

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The HI190M is a compact and lightweight magnetic stirrer. With a small footprint, lack of laboratory bench space is no longer a concern. Built to last with a protective covering and a user-adjustable stirring speed, this small magnetic stirrer is great for any lab space. Compact size to maximize bench space for efficiency and safety. Speedsafe™ mechanism ensures that the maximum speed is never exceeded. Great for use in any sized laboratory. Ideally, when performing electrochemistry measurements, the sample being tested should be stirred. The use of a stir plate allows for proper mixing and the sample to be homogenous in consistency and temperature. The stirring of the sample also helps speed up the response time for a sensor to achieve a stable reading.   Compact & Cost-Effective The HI190M-1 small magnetic stirrer is compact and lightweight, allowing for easy handling in the laboratory environment. Limited area on laboratory benchtops is no longer a concern with this durable, space-saving stirrer. Power-indicating LED lights also assure users at a distance that the stirrer is in operation. The durable plastic covering will resist harmful effects of accidentally spilled chemicals. The HI190M-1 magnetic stirrer is cost-effective for the customer that does not need the added expense of a heating element. The advanced design incorporates electronic controls that allow the user to easily regulate the speed with great precision.   Speedsafe™ Often in the lab, a sample is removed from a stirrer before the speed is adequately reduced. Normally this would cause the internal motor to accelerate until it is damaged. To control the speed from changes in viscosity or removing of the load the HI190M-1 magnetic stirrer incorporates the Speedsafe™ mechanism. With Speedsafe™, a speed sensing device (opto-sensor) is coupled with an FVC (frequency voltage converter) to monitor the stirring speed. As the speed reaches a preset maximum level, the speed limiter shuts down the VCO (voltage-controlled oscillator) to slow down the motor speed. This ensures that when the load is suddenly removed from the stirrer, the motor will not accelerate to such a high speed that will be hazardous to both the user and the stirrer; a feature not commonly found in conventional stirrers.   Fuse Protection For safety, in the event of a short circuit, the HI190M-1 mini magnetic stirrer is equipped with a replaceable fuse. The circuitry of the HI190M-1 magnetic stirrer is grounded to the case for additional protection Compact and lightweight magnetic stirrer with small lab footprint, adjustable stirring speed, power indicating LED lights indicate function from across the room, durable plastic covering to mitigate harmful effects of accidental spills.    

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All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.) Great Flask for yeast culturing. Recommended Process for Use of Flask: Double Boiler Method It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly. Morebeer! recommends using the "double boiler method."  This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask.  All you need is a kettle 3 gallons or larger.  This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.   In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flask and will have minor defects) Kegland Part Number: KL03964

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All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. Great Flask for yeast culturing. Uses a #6.5 stopper (see below) In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flasks and will have minor defects) Kegland Part Number: KL03957

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This magnetic stir plate is a great way to quickly and easily improve the quality of your yeast starters! Our stir plate can be used with up to a 5000ml flask. It has a nice large footprint that adds stability while it’s running. All for a great price. Features: Magnetic stir plate Stir Bar On/Off switch Speed control dial PH Probe holder Standard 110V power 1 year warranty

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Biotin Powder – Yeast Nutrient Overview Biotin (Vitamin B7) is an essential cofactor that supports yeast metabolism and healthy fermentation. It plays a key role in fatty acid synthesis, amino acid metabolism, and energy production—processes that directly impact yeast vitality, alcohol tolerance, and fermentation completeness. Why It Matters Most malt-based worts naturally contain biotin, but grape must, honey, or sugar-based fermentations (like cider, mead, or hard seltzer) are often deficient. In these nutrient-poor environments, yeast can struggle to reproduce and may produce higher levels of unwanted byproducts such as hydrogen sulfide or volatile acidity. Supplementing with biotin ensures robust yeast growth, faster fermentation starts, and cleaner flavor profiles. When to Use Wine & Mead: Add at yeast rehydration or early fermentation. Cider & Hard Seltzer: Add with your complete yeast nutrient blend. Beer: Useful for high-adjunct or sugar-heavy recipes. Usage Rate Use 0.1–0.5 mg per 5 gallons (19 L), or according to your nutrient formulation. Key Benefits Promotes strong yeast growth and vitality Supports complete attenuation Reduces the risk of sluggish or stuck fermentations Enhances fermentation consistency in low-nutrient media  

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This is a super cool bottle for making yeast starter wort. Mix DME and water to make your wort and then boil in the microwave with the cap off. Remove from microwave, thread on the cap while still hot, and place in refrigerator. Store the wort till you need it.  When you are ready to make a starter remove from refrigerator to warm up, pour into a sanitized flask, and add your yeast. Make multiple bottles all at once at store in your refrigerator until needed.  This reagent bottle is made from durable borosilicate perfect for storing anything you need. Borosilicate is great because unlike ordinary glass it won't crack with rapid changes in temperature. KegLand Item Number: KL04022  

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Made from a brand new 15.5 gal. keg with a 4" tri-clamp opening 1" yeast piping for easily moving dense yeast Includes two 1.5" tri-clamp butterfly valves at the inlet and outlet Adjustable PRV for lowering pressure for long term storage 15.5 gal size, perfect for up to 10 bbl batches The MoreBeer! Pro Yeast Brink is made with pro brewers in mind brewing up to 10 barrel batches. The yeast piping gives you a 1" passage to the bottom of a keg to make moving even the thickest yeasts a breeze. There is an adjustable PRV in case you need to lower the pressure for long term storage. The yeast piping is welded into the keg 4" TC keg lid, making for quick and easy inspecting and cleaning. The dip tube is about an inch from the bottom of the keg to help keep non-yeast solids that separate out from transferring with your repitch. 1/2 bbl is perfect for up to a 10 bbl batch with most yeasts. Also available in 1/4 bbl size for up to 5 bbl batches and 1 bbl size for up to 20 bbl batches. Pro tip: If you align one valve handle 90 degrees to the other you won't forget which side is IN or OUT. If you do forget, with the PRV on the back side, the left side is the IN and the right side is the OUT.  

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Peel-away wax pencil for writing yeast information on Erlenmyer flasks and other glassware. Works great on glass carboys as well.

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All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. Primarily used with our MT140 Economy Aeration-Oxidation System, this flask also makes a great addition to any home wine lab. Uses a #5 stopper (see below) In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flasks and will have minor defects)

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Pharmaceutical grade dry agar for making plates and slants. 2 oz will make up approximately 4000 ml of liquid agar. BK580, First Steps In Yeast Culturing, is a great reference if you do not have prior experience working with agar. For lab use, use 12 grams to make 1 liter of solid agar, which is way more than even a big laboratory uses. You need a very accurate scale to measure that out. You want to dissolve the agar slowly in the water or wort for a few minutes. Then heat gently till you get to a boil. Be very careful of not boiling over, if you do it's best to throw that boil out as your water to agar ratio is off and you will not get a good medium. Boil for a few minutes and then divide out to sterilize.

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Good for the first step-up off a plate or from 10ml to 50 ml Great Flask for yeast culturing. In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flasks and will have minor defects) Kegland Part Number: KL03933  

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Made from a brand new 7.75 gal. keg with a 4" tri-clamp opening 1" yeast piping for easily moving dense yeast Includes two 1.5" tri-clamp butterfly valves at the inlet and outlet Adjustable PRV for lowering pressure for long term storage 7.75 gal size, perfect for up to 5 bbl batches The MoreBeer! Pro Yeast Brink is made with pro brewers in mind brewing up to 5 barrel batches. The yeast piping gives you a 1" passage to the bottom of a keg to make moving even the thickest yeasts a breeze. There is an adjustable PRV in case you need to lower the pressure for long term storage. The yeast piping is welded into the keg 4" TC keg lid, making for quick and easy inspecting and cleaning. The dip tube is about an inch from the bottom of the keg to help keep non-yeast solids that separate out from transferring with your repitch. 1/4 bbl is perfect for up to a 5 bbl batch with most yeasts. Also available in 1/2 bbl size for up to 10 bbl batches and 1 bbl size for up to 20 bbl batches. Pro tip: If you align one valve handle 90 degrees to the other you won't forget which side is IN or OUT. If you do forget, with the PRV on the back side, the left side is the IN and the right side is the OUT.  

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Make truly unique beer by fermenting with your very own local yeast. With Bootleg Biology’s Backyard Yeast Wrangling Tool Kit you can capture wild yeast by simply stepping outside. The kit includes everything the experimental homebrewer needs to capture wild bugs, create agar plates, and isolate yeast. Includes: Detailed instruction book & web-based content Half-gallon capture vessel Bug membrane systems Sterile cotton swabs Test tubes Pipettes Bootleg Biology’s Wild Yeast Agar blend Sterile petri dishes ParaFilm Bootleg Biology Fermetrics™ stickers The famous Bootleg inoculation loop (a paper clip) Also includes a Free Local Yeast Project Contributor pack! Once you’ve isolated a strain, becoming a Contributor is as simple as sticking a cultured swab in the included envelope and dropping it in a mailbox. Postage is pre-paid in the U.S.! As an added bonus: If you send your viable local yeast culture to Bootleg Biology, it will be banked in their laboratory freezer! You won’t ever have to worry about losing your fantastic local yeast culture.    

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