Wyeast 2112 California Lager

Wyeast 2112 California Lager is a Saccharomyces pastorianus lager strain with a uniquely broad fermentation temperature range — it retains lager characteristics at temperatures up to 65°F (18°C), making it far more accessible for homebrewers without dedicated cold fermentation equipment. Most lager strains require fermentation below 55°F; Wyeast 2112 performs cleanly at 58–68°F, producing malty, brilliantly clear beers with true lager character. This is the traditional strain for California Common (also known as steam beer) — a distinctly American hybrid style that uses lager yeast at ale fermentation temperatures, developed in San Francisco during the Gold Rush era when cold refrigeration was unavailable. Its high flocculation means the yeast drops out of suspension quickly, producing naturally clear beer with minimal effort. Note: Wyeast 2112 is not recommended for cold temperature fermentation — it performs best within its 58–68°F range and should not be used as a standard cold-fermented lager yeast. Flocculation: High Apparent Attenuation: 67–71% Alcohol Tolerance: 9% Fermentation Temperature: 58–68°F (14–20°C) Species: Saccharomyces pastorianus