News from the latest
White Labs catalogue (hat-tip Wh over at
Suregork's)
[WLP051 California V Ale] "is a big ester producer, showcasing notes of cherry and apple which compliment pale ales, blonde and brown ales. Even in pale ales, this strain’s characteristic lower attenuation results in a full-bodied malt forward beer. Typically leaves some residual, lager-like sulfur compounds in finished beer. Recent sequencing studies show that WLP051 belongs to
Saccharomyces pastorianus species, the same hybrid species as most lager strains. However, this strain has been used to make ales for decades and was previously categorized as belonging to
Saccharomyces cerevisiae."
So WLP051 is a lager yeast. Traditionally it's linked to Anchor Liberty, and hence to 1272 and BRY-97. Probably not the cleanest yeast to use, but it kinda highlights how fluid the definition of "lager" beer can be when people have been using a strain at ale temperatures in ale worts and never realised it was technically a lager yeast. Might explain its reputation for being a slow starter though.