White Labs WLP036 Dusseldorf Alt Yeast is a traditional alt yeast from Dusseldorf Germany. It produces clean, slightly sweet alt beers and does not accentuate hop flavor. 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.