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Premium Dry Yeast

CellarScience®: Brew Better Beer Without the Starter

Skip the complicated liquid pitches and upgrade your fermentation. CellarScience® delivers superior performance and massive cell counts without breaking the bank.

  • Massive Cell Counts: Get more viable cells for a stronger, healthier fermentation from day one.
  • Pitch Directly & Save Time: No starters needed. Simply tear open and pitch directly into most worts.
  • Incredible Value: Experience premium quality and unmatched convenience at a price that makes sense.
  • Pro-Level Results: Need a boost for high-gravity brews? Easily rehydrate with FermStart for peak performance.
CellarScience Dry Yeast Chart
The Setup

Select Your Strain

Choose the perfect CellarScience® dry yeast tailored for your specific beer style and flavor profile.

The Pitch

Pitch Directly

Save hours of prep time. Tear open the sachet and pitch the yeast directly into your chilled wort.

The Reward

Ferment & Enjoy

Experience a vigorous, healthy fermentation resulting in superior taste and quality in your finished beer.

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54 products

  • CellarScience - Dry Yeast - KOLSCH Ale (500 g) CellarScience - Dry Yeast - KOLSCH Ale (500 g)

    CellarScience® KÖLSCH Dry Yeast | Kölsch Ale | Premium Beer Yeast | 500 g

    A classic yeast strain for Kölsch & Altbier beer styles. A neutral ester profile allows the beer to better express noble hops & malt character. Finishes dry with low levels of diacetyl. Every batch is PCR tested to ensure quality.  Dosage: Use at a rate of 50-95 grams per barrel, depending on wort temperature and gravity. Direct Pitch or Rehydrate: KÖLSCH yeast is designed to be sprinkled directly onto the surface of your wort with no oxygenation required in the initial fermentation. Our aerobic growth process makes this possible by creating dry yeast with high viability and high sterol levels. KÖLSCH yeast is pre-loaded with essential nutrients to ensure a successful, complete fermentation. While not required, some brewers prefer to rehydrate yeast. To hydrate yeast, first, sanitize the yeast brick and scissors. Use 10 grams of sterilized tap water between 85-95°F (29-35°C) mixed with 0.25 grams of FermStart per gram of yeast. Sprinkle yeast on the water. Allow the slurry to stand undisturbed for 20 minutes, then swirl. Use small amounts of wort to adjust to within 10°F (6°C) of wort temperature before pitching. Ferment between 60-73°F (16-23°C). Optimum Fermentation Temp: 60-73°F Flocculation: Medium Alcohol Tolerance: 10-11% ABV Attenuation: 75-80% Similar Strains: WLP029, WY2565 Gluten-free  

    $84.99

  • CellarScience - Slayer 800 - PLACEHOLDER CellarScience - Slayer 800 - PLACEHOLDER

    CellarScience® Slayer 800 | High-Gravity Nutrient for 18-20% Alcohol Ferments

    High-Gravity Optimized: Precisely calibrated for 18–20% ABV sugar-wash fermentations. Ultra-Clean Finish: Eliminates "turbo funk" by actively suppressing fusels, sulfur, and solvent off-flavors. Advanced Nutrient System: Dual-phase nitrogen, fortified minerals, and vitamins protect yeast under extreme ethanol stress. Highly Versatile Base: Produces a completely neutral alcohol perfect for 20% cocktails or diluted hard seltzers. Broad Compatibility: Performs consistently with a wide range of distiller’s and specialty yeast strains. Slayer 800 is precisely calibrated for sugar-wash fermentations targeting 18 to 20% ABV. Within this window, the nutrient ratio is tuned to balance nitrogen availability, osmotic stress, and yeast health. Fermenting a wash to 20% ABV demands precision, not brute force. At this level, osmotic pressure, ethanol toxicity, and nutrient exhaustion push yeast to their limits. Conventional “turbo” nutrients rely on aggressive nitrogen overloads that drive speed at the cost of flavor, producing the unmistakable turbo funk familiar to high-gravity brewers. Slayer 800 was engineered to defeat that  enabling rapid, stable, and neutral fermentations that finish strong, clean, and predictable. Every component in Slayer 800 serves a biochemical purpose. Its dual-phase nitrogen system combines rapid inorganic nitrogen for early growth with a measured organic fraction that sustains amino-acid synthesis deep into fermentation. This balanced loadout prevents nutrient collapse while minimizing fusel and sulfur formation. A mineral-based buffering system moderates acidification and preserves yeast metabolic efficiency. Supported by bioavailable zinc, magnesium, and an optimized vitamin complex, Slayer 800 reinforces cell-wall integrity and alcohol-dehydrogenase activity, the critical pathways that allow yeast to survive and thrive at extreme gravities. The result is a wash that ferments completely and cleanly, without the off-flavors or volatility typical of over-stimulated turbo washes. The purity of a Slayer 800 fermentation produces a remarkably neutral alcohol base suitable for diverse applications. It can serve directly as a 20% cocktail base for spirit-free cocktails or be diluted into a lower-strength seltzer base without introducing residual yeast or flavor carryover. The result is a clean, versatile foundation for both commercial and craft beverage creation. Compatible with a wide range of distiller’s and specialty yeast strains, Slayer 800 delivers complete, stable fermentations from small-batch runs to large-scale production. Its balanced nutrient profile supports consistent attenuation and clean finishes across yeast types, eliminating the variability that plagues generic turbo formulas. High-gravity specialization – Tuned for 18–20% sugar-wash fermentations. Neutral, clean profile – Suppresses fusel, sulfur, and solvent-like off-compounds. Balanced nitrogen system – Dual-phase nitrogen supports long-duration metabolism. Buffered mineral stability – Protects yeast metabolism through ethanol stress. Micronutrient reinforcement – Zinc, magnesium, and vitamins enhance alcohol tolerance. Versatile end use – Produces a 20% cocktail base or a clean, lower-potency seltzer base. Broad strain compatibility – Performs with both distiller’s and specialty yeast strains. Science-driven formulation – Developed through extensive high-gravity trials for maximum speed and purity. Available in convenient batch sizes (25 g for 2 gallons; 63 g for 5 gallons) as well as 1-lb and 5-lb bulk options. For large batches, the recommended dosage rate is 12.5 g per gallon or 13.7 oz per bbl.

    $4.49 - $109.99

  • CellarScience - Dry Yeast - ACID Sour Ale (500 g)

    CellarScience® ACID Dry Yeast | Sour Ale | Premium Beer Yeast | 500 g

    ACID yeast will complete both Lactic and Alcoholic fermentation on its own, producing an acidic beer with light notes of fruity floral esters Shave days off your sour beer making process by skipping the kettle souring step altogether! No need for added equipment to purge your kettle with CO2 or add heating to maintain high temps for lactic fermentation To reduce acidity, pitch an ale yeast strain to stop souring and wrap up alcoholic fermentation Ferment between 66-77°F CellarScience offers high-quality yeast that is easy to use, consistent, and available at a tremendous value Consistent, repeatable results without the need for kettle souring. ACID from CellarScience is a naturally selected, GMO-free yeast strain that has the ability to ferment and sour beer simultaneously. In a traditional kettle souring process, you'll need to pre-boil wort, purge it with CO2, pitch lactic acid, wrap and seal the kettle, and insulate or provide a heat source to maintain lactic acid fermentation temps that may be as high as 100°F+ depending on your chosen pitch. ACID allows brewers to bypass those steps and produce sour beers with the equipment they already own. Pitch directly in your fermenter and ACID yeast will complete both Lactic and Alcoholic fermentation on its own. When allowed to run its course, this yeast produces a rounded, refreshingly acidic beer with light notes of fruity floral esters. If you wish to reduce acidity, simply pitch a regular ale yeast strain when the desired pH is obtained which will hault souring and complete the rest of the alcoholic fermentation. Every batch is PCR tested to ensure quality. Dosage: Use at a rate of 80-120 grams per barrel, depending on wort temperature and gravity. Direct Pitch or Rehydrate: ACID yeast is designed to be sprinkled directly onto the surface of your wort with no oxygenation required in the initial fermentation. Our aerobic growth process makes this possible by creating dry yeast with high viability and high sterol levels. ACID yeast is pre-loaded with essential nutrients to ensure a successful, complete fermentation. While not required, some brewers prefer to rehydrate yeast. To hydrate yeast, first, sanitize the yeast brick and scissors. Use 10 grams of sterilized tap water between 85-95°F (29-35°C) mixed with 0.25 grams of FermStart per gram of yeast. Sprinkle yeast on the water. Allow the slurry to stand undisturbed for 20 minutes, then swirl. Use small amounts of wort to adjust to within 10°F (6°C) of wort temperature before pitching. Ferment between 66-77°F (19-25°C). Optimum Fermentation Temp: 66-77°F Flocculation: High Alcohol Tolerance: 9% ABV Attenuation: 75-80% Lachancea thermotolerans Gluten-free CellarScience Yeast: For years liquid yeast has been sold as the higher quality option but times are changing. Yes, 20 years ago dry yeast was made by bread yeast producers and the quality was not as good as liquid yeast. CellarScience is helping to flip that script with a full lineup of high-quality dry yeasts. Cell count and viability is usually higher than commercial liquid yeast pitches, which vary from pouch to pouch and don't ship well. CellarScience yeast can be pitched directly in most batches of wort, offering significant time savings. Yeast that is quick and easy to use, high quality, and available at a reasonable cost adds up to a tremendous value. Quality yeast that doesn't "break the brink". CellarScience Nutrients: For high gravity ferments consider rehydrating yeast with CellarScience FermStart yeast hydration nutrient. For high gravity or low nutrient wort, feed your fermentation with CellarScience FermFed DAP Free complex yeast nutrient mix.  

    $124.99

  • CellarScience - Dry Yeast - MATTERHORN - PLACEHOLDER CellarScience - Dry Yeast - MATTERHORN - PLACEHOLDER

    CellarScience® MATTERHORN Dry Yeast | Light Lager | Premium Beer Yeast

    MATTERHORN is a top choice for everyday light lagers that define a brewery’s baseline Delivers crisp, well-attenuated beers with a minimal fermentation signature Designed to be sprinkled directly onto the surface of your wort with no pre-oxygenation before pitching required Ferment between 48-58°F MATTERHORN is a Swiss-origin lager strain particularly well suited to light lagers and other styles where clear malt and hop definition is important. Its fermentation character remains subtle, with a light floral quality that adds aromatic lift without competing with the malt or hops. Combined with its attenuation profile, MATTERHORN produces a firm, dry finish that keeps delicate malt character and hop bitterness clearly expressed. That makes MATTERHORN particularly useful for German or Czech-inspired Pilsners, everyday light lagers, modern hoppy lagers, and West Coast Lagers. It can also work well with richer wort grists when the goal is to maintain a dry, refreshing finish and prevent malt character from becoming overly heavy. Its consistent performance across its recommended temperature range provides the reliability and repeatability needed for both traditional and modern lager production. A top choice for everyday light lagers that define a brewery’s baseline Direct Pitch: No rehydration needed Reliable & Consistent: Every batch undergoes PCR testing for purity and performance High Cell Count: 15g per sachet — over 36% more than standard 11g dry yeast packs   Dosage: One sachet is enough to treat a 5–6 gallon batch. When calculating for larger batches, use at a rate of 2–3 grams per gallon of wort. We recommend rounding up by one full sachet rather than measuring out the yeast exactly. For professional brewers, use at a rate of 90-170 grams per barrel, depending on wort temperature and gravity. Direct Pitch or Rehydrate: MATTERHORN yeast is designed to be sprinkled directly onto the surface of your wort with no oxygenation required in the initial fermentation. Our aerobic growth process makes this possible by creating dry yeast with high viability and high sterol levels. MATTERHORN yeast is pre-loaded with essential nutrients to ensure a successful, complete fermentation. While not required, some brewers prefer to rehydrate yeast. To hydrate yeast, first, sanitize the yeast brick and scissors. Use 10 grams of sterilized tap water between 85-95°F (29-35°C) mixed with 0.25 grams of FermStart per gram of yeast. Sprinkle yeast on the water. Allow the slurry to stand undisturbed for 20 minutes, then swirl. Use small amounts of wort to adjust to within 10°F (6°C) of wort temperature before pitching. Ferment between 48-58°F (9-14°C). Optimum Fermentation Temp: 48-58°F Flocculation: Medium to High Alcohol Tolerance: 12% ABV Attenuation: 79-83% CellarScience Yeast: For years liquid yeast has been sold as the higher quality option but times are changing. Yes, 20 years ago dry yeast was made by bread yeast producers and the quality was not as good as liquid yeast. CellarScience is helping to flip that script with a full lineup of high-quality dry yeasts. Cell count and viability is usually higher than commercial liquid yeast pitches, which vary from pouch to pouch and don't ship well. CellarScience yeast can be pitched directly in most batches of wort, offering significant time savings. Yeast that is quick and easy to use, high quality, and available at a reasonable cost adds up to a tremendous value. Quality yeast that doesn't "break the brink". CellarScience Nutrients: For high gravity ferments consider rehydrating yeast with CellarScience FermStart yeast hydration nutrient. For high gravity or low nutrient wort, feed your fermentation with CellarScience FermFed DAP Free complex yeast nutrient mix.    

    $4.99 - $64.99

  • CellarScience - Dry Yeast - MUNICH - PLACEHOLDER CellarScience - Dry Yeast - MUNICH - PLACEHOLDER

    CellarScince® MUNICH Dry Yeast | German Lager | Premium Beer Yeast

    1 review

    MUNICH delivers crisp, clean flavor with minimal ester production Recommended for Pilsner, Helles, Dunkel, Märzen, Bock Designed to be sprinkled directly onto the surface of your wort with no pre-oxygenation before pitching required Pressure-Tolerant: Ferments under pressure up to 12 PSI (0.8 bar) with clean results Ferment between 50-64°F A performance-selected isolate from a classic Weihenstephan lager strain, MUNICH is particularly well suited to malt-focused lager styles where fermentation character should remain restrained. Its softer, rounder profile allows malt character to remain prominent, with bread, cracker, toast, and other malt-derived flavors carrying through without the yeast competing for attention. Its attenuation profile helps preserve a slightly fuller, smoother presentation while maintaining a balanced lager finish. MUNICH excels at traditional cold fermentation, and it remains remarkably clean and stable when fermented warmer under pressure, allowing brewers to push temperature upward while maintaining restrained lager character. That wider fermentation range and pressure tolerance make it equally useful for traditional lager fermentation and more efficiency-driven production schedules. Crisp, clean flavor with minimal ester production Fermentation Range: 50–64°F (10–18°C) — clean even at the upper end Low to moderate sulfur production Recommended Styles: Pilsner, Helles, Dunkel, Märzen, Bock Pressure-Tolerant: Ferments under pressure up to 12 PSI (0.8 bar)  Direct Pitch: No rehydration needed Reliable & Consistent: Every batch undergoes PCR testing for quality assurance High Cell Count: 15g per sachet, 36% more than standard 11g dry yeast packs Dosage: One sachet is enough to treat a 5–6 gallon batch. When calculating for larger batches, use at a rate of 2–3 grams per gallon of wort. We recommend rounding up by one full sachet rather than measuring out the yeast exactly. For professional brewers, use at a rate of 90-170 grams per barrel, depending on wort temperature and gravity. Direct Pitch or Rehydrate: MUNICH yeast is designed to be sprinkled directly onto the surface of your wort with no oxygenation required in the initial fermentation. Our aerobic growth process makes this possible by creating dry yeast with high viability and high sterol levels. MUNICH yeast is pre-loaded with essential nutrients to ensure a successful, complete fermentation. While not required, some brewers prefer to rehydrate yeast. To hydrate yeast, first, sanitize the yeast brick and scissors. Use 10 grams of sterilized tap water between 85-95°F (29-35°C) mixed with 0.25 grams of FermStart per gram of yeast. Sprinkle yeast on the water. Allow the slurry to stand undisturbed for 20 minutes, then swirl. Use small amounts of wort to adjust to within 10°F (6°C) of wort temperature before pitching. Ferment between 50-64°F (10-18°C). Optimum Fermentation Temp: 50-64°F Flocculation: Medium to High Alcohol Tolerance: 10.5% ABV Attenuation: 75-80% CellarScience Yeast: For years liquid yeast has been sold as the higher quality option but times are changing. Yes, 20 years ago dry yeast was made by bread yeast producers and the quality was not as good as liquid yeast. CellarScience is helping to flip that script with a full lineup of high-quality dry yeasts. Cell count and viability is usually higher than commercial liquid yeast pitches, which vary from pouch to pouch and don't ship well. CellarScience yeast can be pitched directly in most batches of wort, offering significant time savings. Yeast that is quick and easy to use, high quality, and available at a reasonable cost adds up to a tremendous value. Quality yeast that doesn't "break the brink". CellarScience Nutrients: For high gravity ferments consider rehydrating yeast with CellarScience FermStart yeast hydration nutrient. For high gravity or low nutrient wort, feed your fermentation with CellarScience FermFed DAP Free complex yeast nutrient mix.    

    $4.99 - $64.99

  • CellarScience - Reaper - PLACEHOLDER CellarScience - Reaper - PLACEHOLDER

    CellarScience® REAPER | High-Gravity Yeast for 20% Alcohol Ferments

    Reaper is the best yeast for ultra-clean, fast sugar base ferments up to 20% ABV. Create a neutral craft-cocktail base, or dilute to 5% for seltzer, tripling yield. Also well suited for distillation. Pair with Slayer 800 yeast nutrient for the fastest, cleanest fermentation possible Ferment between 75-95°F Reaper the Harvest Strain Picked for one job: pull clean alcohol out of high-gravity sugar washes fast and finish without dragging a bunch of extra fermentation personality along for the ride. This is a Very High Gravity yeast built for high-alcohol scenarios up to ~20% ABV, with aggressive kinetics that keep moving when typical strains start to slow, stress, and produce off-flavors. Reaper is also comfortable running warm, and it’s right at home in real-world distilling temperatures. 75–95°F is a sweet spot for speed and cleanliness. And yes, it’s called Reaper for a reason. When the wash is heavy and the clock is ticking, it shows up to collect the yield, finish the job clean, and leave as little behind as possible. VHG Yeast (Distillation + Clean Base Ferments) Perfect for high-gravity seltzers Cocktails & distilling washes Pairs with Slayer 800 Nutrient For fermentations up to 20% ABV Clean base flexibility: Ferment ultra-clean, especially with Slayer 800, for a neutral cocktail-ready base, or ferment strong and dilute back to hard seltzer strength for a crisp, clean canvas for flavoring. High alcohol without drama: Designed for high-gravity ferments where you want to push hard and still land clean. Fast sugar-wash kinetics: Reaper ferments sugar washes aggressively and finishes strong, especially when properly fed. Neutral, exceptionally clean profile: Less unwanted fermentation character means a cleaner base and an easier day on the back end. Wide temperature range: Flexible across a broad range, but genuinely thrives in the 75–85°F zone. Like all CellarScience yeast, Reaper is PCR-verified for purity and consistency. The Cleanest Reaper is Reaper + Slayer 800 Sugar washes are nutrient-poor by nature, and that’s where many clean-ferment plans fall apart. Pair Reaper with CellarScience Slayer 800 to give the yeast the nutrition it needs to stay healthy under high-gravity and high-alcohol conditions. The combination helps Reaper ferment fast and steadily while keeping unwanted fermentation byproducts in check. A Clean Base You Can Actually Use. Reaper Isn’t Only for the Still. When paired with Slayer 800, Reaper can produce a clean, neutral base for cocktail-style builds, creating a crisp blank canvas that works well with citrus, botanicals, and flavor systems without bringing unwanted yeasty or funky character. For seltzer, Reaper is equally at home in high-gravity sugar ferments. Ferment clean, dilute down to your target hard seltzer strength, carbonate, and flavor. The same high-gravity capability that makes Reaper useful for distillation makes it possible to produce a clean base efficiently and take it in several different directions. Dosage: One 15-gram sachet treats approximately 5 gallons of wash. For larger volumes, use at a rate of 3 grams per gallon, rounding up to the next full sachet. For professional brewers, use at a rate of 90-130 grams per barrel, depending on wash temperature and gravity. Optimum Fermentation Temp: 75-85°F Flocculation: Medium to High Alcohol Tolerance: 20% ABV Attenuation: 78-93%  

    $4.99 - $69.99

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