ArticleLautering TechniquesHow to separate the wort from your spent grains.Already a member? Log InWritten by Chris ColbyIssue: May-June 2003You'll Also Like Article MEMBERS ONLY Build This Brewstand How to separate the wort from your spent grains. Already a member? Log In 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.