From the Ardennes region of Belgium, this classic yeast strain produces moderate levels of ester and phenolic characters, often described as dried sage and black cracked pepper. High attenuation results in a dry finish ideal for high gravity beers. This strain is recommended for dark strong ales, abbey ales and seasonal specialties like Belgian holiday ales.
**This strain has been genetically typed in our lab using polymerase chain reaction (PCR). Through this genetic testing, we have determined WLP545 Belgian Strong 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.