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 at White Labs using polymerase chain reaction (PCR). Through this genetic testing, White Labs has 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.