I have a brew session where the numbers don't make sense to me. Here's what I think is the relevant info from the recipe (it's BIAB if that matters): Efficiency: 70% (ending kettle) "Starting boil volume" under Water Requirements: 2.88 gal (it's for a 2.5 gal batch) "Recipe based estimate"...

My next batch uses 75% Pilsner malt and I'd like to do a 90-min boil, instead of my normal 60-min, to get rid of some DMS. The extra 30 minutes means more boil-off losses, so I plan to use more water. Problem is that I don't want to take the extra risk of a boil-over. So, my thought is to add...