Dry Active Distiller's Yeast 1# (DADY) SuperStart Distiller's Yeast (DADY) has an alcohol tolerance up to 22% (1 lb. bulk pack): Ferments up to 22% before slowing. Use nutrients to obtain the highest alcohol level prior to distillation usually not used for wines or beers. Sufficient yeast for approx 500 gallons Optimal fermentation temperature is 90F +/-2F.