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 Oxidation Rates, Creating the Haze, and Pressure Fermenting in a Conical Learn how quickly beer can oxidize after packaging. Also a homebrewer has a question about getting hazy and another about making the most of their new conical. Article MEMBERS ONLY Post-Souring Gravity, Multi-Batch Brew, Priming a Keg, and Fermenting Lemon Juice Do you know how much sugars are consumed during the souring process for kettle-soured beer? The Wiz explains Lactobacillus souring and has tips for multiple-batch brewing, priming in a keg, and making . . . lemon beer?