White Labs started in 1995 with 5 strains available for homebrewers-California Ale, English Ale, Irish Ale, Hefeweizen Ale & San Francisco Lager. We wanted a blend with all these strains, but Hefeweizen doesn't fit so we crafted a unique blend that truly tests the brewers imaginations. The blend contains unique portions of California Ale, English Ale, Irish Ale, & San Francisco Lager. For a limited time only! eMail inquires for availability before ordering. Attenuation: 70-75; Flocculation: Medium-High; Optimum Ferm Temp: 66-70.