This authentic Kolsch strain from one of Germany's leading brewing schools has a rich flavor profile which accentuates a soft malt finish. It has low or no detectable diacetyl production and will also ferment well at colder temperatures for fast lager type beers. Alcohol Tolerance: 10%. Flocculation: Low. Attenuation: 73-75%. Temperature Range: 55-70F (13-21C).