S-23 is a genuine German style dried lager yeast, developing the best of its lager notes under low-temperature fermentation (50-57 F). Good flocculation with excellent attenuation Type: Ale YeastMinimum Attenuation: 50% Maximum Attenuation: 57%Flocculation: MediumMinimum Fermentation Temperature: 50F (10C)Maximum Fermentation Temperature: 68F (20C)