Last few times I did butt (no comments please), I got a cryo pak from Costco and they were about 8# a piece. I cook at 250 until the stall, then put them in the pan with two bottles of dark beer. Foil and take to 195-205. Like Porkchop, I strain the liquid and add back. It gives a super nice flavor--the dark beer compliments the pork perfectly.