I just mashed in an Imperial stout, 3 gallon batch with a 23.5 lb. grain bill comprised of 12 lb. two row & the rest more or less equal parts black roasted barley, Carafa II, 120* crystal, 60* caramel Munich, Paul's Chocolate, rolled oats, Special B, Victory, flaked barley, Blackprinz, brown malt and rye malt. I'm looking for suggestions on what to do with/ make out of the sparge. My guess is that 5 gallons of sparge should come somewhere around 1.060, but that's just a WAG.
Thanks.