White Labs WLP564 Leeuwenhoek Saison Yeast Blend is an incredibly versatile strain that creates spicy, dry, and clean beers. This yeast was developed for the White Labs in-house saisons and is a blend of two saison strains and a low-phenolic Belgian strain. It produces a very dry saison, achieving approximately 85% attenuation. White Labs yeast is world-renowned for quality and innovation, certified kosher, GMO free, and subject to thorough quality analysis before being packaged. This yeast comes packaged in White Labs' PurePitch packaging using the revolutionary FlexCell process, which creates yeast that has never been transferred or exposed to the environment. The PurePitch packaging is a recyclable, flexible material that allows for increased breathability, reducing the chance of gas buildup and maintaining the optimal environment for yeast.