ArticleAirlock Suck Back, Bottling Carbonated Beer: Mr. Wizard Q When cold crashing or lagering beer from a relatively warmer temperature to a colder one, negative pressure of condensed air in the headspace can draw in liquid and air through theAlready a member? Log InWritten by Ashton LewisYou'll Also Like Article MEMBERS ONLY Combating Chloramine and A Deep Dive Into The Dynamics of Glycol Chillers The Wiz responds to a question about how to remove chloramine from water. Also, for the growing legion of hobby and small-scale brewers using glycol fermentation control systems, learn some of the in’s and out’s to their proper use. 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.