Hi everyone,
going to take a crack at going with RO water for my next brew, an oatmeal stout. here's the recipe:
http://hopville.com/recipe/927282/oatmeal-stout-recipes/updegraff-oatmeal-stout-2011-10-08-version
my question is, would it be preferrable to add the CaCL and gypsum to just the...