Omega Yeast | OYL-500 Saisonstein® | Double Pitch | 225 Billion Cells

Omega Yeast OYL-500 Saisonstein® is a liquid hybrid saison yeast that combines French and Belgian saison strains to produce expressive farmhouse and Belgian-style ales. Each 150 mL pouch contains approximately 225 billion cells, providing enough yeast for a standard 5-gallon batch while delivering high attenuation, a dry finish, and complex fermentation character.

Saisonstein® is formulated to produce expressive spice, subtle fruit esters, and the dry profile expected in traditional saison and Belgian-inspired beers. With attenuation of 82–100%, low-medium flocculation, and diastatic (STA1+) properties, this strain ferments thoroughly while developing the distinctive character associated with farmhouse brewing. It performs best within a fermentation temperature range of 64–80°F (18–27°C) and has an alcohol tolerance of up to 14-16% ABV.

Packaged as a liquid yeast culture, OYL-500 should be stored refrigerated between 33–38°F (1–3°C) and should not be frozen. Pitch directly into well-oxygenated wort and maintain recommended fermentation temperatures for optimal performance. Allow sufficient conditioning time due to the strain's low flocculation, and use within four months for best viability.

Omega Yeast OYL-500 Saisonstein® is ideal for saisons, farmhouse ales, Belgian blondes, Belgian tripels, and other Belgian-style specialty ales. Its combination of expressive aromatics, high attenuation, and reliable fermentation performance makes it an excellent choice for homebrewers seeking authentic Belgian and farmhouse beer character.