A unique yeast strain that creates farmhouse-style beers with a phenolic “bite” and moderate ester compounds. Producing a cleaner aroma profile than other farmhouse styles, this yeast is versatile and highly attenuating.
**This strain has been genetically typed in our lab using polymerase chain reaction (PCR). Through this genetic testing, we have determined WLP590 French Saison Ale Yeast to contain the glucoamylase gene (STA1), a potential indicator of S. cerevisiae var. diastaticus. Brewers yeast are natural hybrids, which make it possible for certain strains to display elements of the STA1 gene. These strains have the ability to utilize some dextrins (unfermentable sugars), resulting in higher levels of attenuation than what is considered typical. In this instance, WLP590 French Saison Ale Yeast is not considered a contaminant and will not cause over attenuation in finished beer by fermenting dextrins.
At White Labs, we do everything possible to detect for undesired organisms within our process and cultures. The strains we carry with known var. S. diastaticus genetics have been researched and validated to perform without over-attenuating, which is possible through our nearly 25 years of experience paired with internal and external fermentation data.**