ArticleHop Substitutions Strategies to brew recipes using different hops.Already a member? Log InWritten by Chris ColbyIssue: March-April 2008You'll Also Like Article MEMBERS ONLY Late Hopping: Tips from the Pros Strategies to brew recipes using different hops. Already a member? Log In Article MEMBERS ONLY Hot-Side Math: Geeking out on brewhouse efficiency Calculating your brewhouse efficiency is a task that all-grain homebrewers should perform to better understand their system. Take a walk through the steps of finding your own brewhouse efficiency.