From a small brewpub in Cologne, Germany, this yeast works great in Kölsch and Alt style beers. Good for light beers like blond and honey. The slight sulfur produced during fermentation will disappear with age and leave a super clean, lager like ale. Attenuation: 72-78%. Flocculation: Medium. Optimum Fermentation Temperature: 65-69°F. Does not ferment well under 62°F. We include a FREE gel ice pack with every order of liquid yeast. There is no need to order free gel ice packs...they're automatically included. We will include one ice pack for every six yeast ordered. If you wish an order to ship with more than 1 ice pack for every six liquid yeast, you may order extra** **We recommend you do not order more than 1 ice pack for every 2 yeasts ordered. Ice packs are frozen when shipped, and there is a danger of frozen yeast.