One of our most popular saison strains, it is great for farmhouse-style beers because it produces flavors and aromas of pear, apple and cracked pepper. This strain is a high attenuator producing a very dry and drinkable finishing beer. WLP590 French Saison Ale Yeast is POF+, this strain will contribute phenolic characteristics to finished products.

**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 STA1 gene (glucoamylase), a potential indicator of Saccharomyces 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.

At White Labs, we do everything possible to detect for undesired organisms within our process and cultures. The strains we carry with known Saccharomyces cerevisiae var. diastaticus genetics have been researched and validated to perform without excessive over-attenuating, which is possible through our nearly 25 years of experience paired with internal and external fermentation data.**

To read more about Saccharomyces cerevisiae var. diastaticus, click here.

***European customers can now order a 100% certified organic version of this strain from White Labs Copenhagen. The organic strains can be identified by their green label, the certified organic logo designations of the EU, USDA and Denmark as well as the addition of an “O” following the WLP strain number. If you are outside of European territory and interested in obtaining organic yeast from White Labs Copenhagen, please email [email protected]. Our team will follow up with you as we work to expand our shipping territories for organic yeast.***

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