ArticleStarter Guide to Decoction Mashing As brewing has evolved some techniques that were once considered essential have become obsolete. Decoction mashing, however, arguably maintains important aspects of crafting a well-respected beer. But its role has changed. InAlready a member? Log InWritten by Alex FodorYou'll Also Like Article FREE BIAB: Tips From the Pros Brew-in-a-bag (BIAB) continues to grow in popularity around the world. Learn from two brewers well versed in maximizing the BIAB experience. Article MEMBERS ONLY The Role of pH in Brewing pH plays a role in every step of the brewing process — from the time you mash in, all the way through to the final beer that fills the glass. Take a closer look at pH throughout the brewing process.