Despite our best efforts, all grain brewers will often need to adjust our post-mash/pre-boil gravity and/or volume to hit our targets. Mashing is not a totally smooth and predictable process so even with focus, experience, and care, we can be off more than we'd like. With that in mind, I thought I'd share my notes for the ways you can make corrections to realign your pre-boil gravity and volume with your targets. When you do, you can feel confident that you are far more likely to hit your final gravity and volume targets and produce the beer you intended. Want to learn the easy steps to put your homebrew back on track?