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  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.  

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  $124.99

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  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  

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  $84.99

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  CellarScience® Slayer 800 | High-Gravity Nutrient

  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 cktails 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.

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  $4.49 - $109.99

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