I'm cooking for about 20 ppl that we've invited over for a football game tomorrow night. I've got three boston butts that I'm going to slow roast in the oven. I'm not marinating nor will I use a rub since it is essentially going to be a poor man's BBQ (I know its a far cry from the real thing but so be it). My question is, how long should I expect to cook them for. I'm putting them in at 250 degrees and I have every intention of cooking them all night. Each one is about 6lbs so should I figure my cook time based on about 1 1/2 hours per pound based on the size of an individual butt or should I figure 1 1/2 hours per pound for the whole thing. If that's the case then I'm screwed because I don't have 25 hours to cook these things for. It can't be that long. Please help!!!!!
Thanks in advance.