Saflager S-23 is widely used by Western European commercial breweries and will produce the best of its Lager flavors when fermented at low temperatures (48-59 deg. F) yet producing very good beers at room temperature. Genuine bottom fermenting commerical yeast for lager beer production. Sedimentaion is high, Final Gravity is medium. Use one 11.5 g package if pitching at room temperature into 5 gallons. Use two packs per 5 gallons if pitching below 54 deg. F. 11.5 gram pack.