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%
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