White Labs WLP009 Australian Ale Yeast produces a clean, malty beer with pleasant ester "bready" characters. This yeast ferments successfully and cleanly at higher temperatures, combined with good flocculation and good 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.