This yeast is used to produce the "California Common" style beer. A unique lager strain which has the ability to ferment up to 65 degrees while retaining lager characteristics. Can also be fermented down to 50 degrees for production of marzens, pilsners and other style lagers. Attenuation: 65-70%. Flocculation: High. Optimum Fermentation Temperature: 58-65 �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.