ArticleAeration & Mash Hopping: Mr. Wizard Q I have been trying to come up with an easy and cost-effective way to get good aeration in my fermentations. I recently came across a device called an Oxygen Concentrator, whichAlready a member? Log InWritten by Ashton LewisYou'll Also Like Article MEMBERS ONLY Hop Creep Explained, Backsweetening, and Maximizing Malt Freshness The term “hop creep” is not to be confused with lupulin shift. The Wiz provides the current understanding of hop creep as well as how to maximize certain flavor components of beer. Article MEMBERS ONLY Digging into the Haze, Cacao Nibs Advice and Harvesting Yeast Proteins from grains react with polyphenols from grain and hops, and when this happens the protein-polyphenol complex causes light to scatter and the beer to appear hazy.