A properly aerated wort is crucial to ensuring a clean, rigorous, and complete fermentation. Yeast cells generally need about 10 ppm dissolved oxygen in the wort in order to function properly. A lack of oxygen can negatively impact your brew in a number of ways. First, some background. Yeast cells need oxygen in order to reproduce. The oxygen is a critical component in the production of cell membranes, organelles, and various compounds the yeast need to produce in order to survive. In … [Read more...] about Oxygenation when your brew needs it most!