This is really confounding me and I'm looking for suggestions. I have a 7 gallon brew pot and I boil with it almost full, then I sparge it into the fermenter and when all is said and done I only have about 3+ gallons (< 4 anyway). I am just not understanding how this is possible? I topped off last night with a full gallon after all was said and done and I barely have 4 gallons.