The White Labs WLP066 London Fog Yeast is perfect for New England style IPAs. It produces a medium-ester profile similar to WLP008 East Coast Ale Yeast and leaves some residual sweetness, which helps accentuate both malt and hop flavors and aromas. 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.