You want the fattest (biggest) picnic shoulder of the hog. It may be called the boston butt in Yankee places, but it's a "pork picnic" in the South. No worries, just get a big one. Cook it real low (225-275 max peaks) over good heat. Got to get a good rub on it initially, and you gotta get a good sauce to end it with. You have the Carolina western sticky sweet sauces, and the eastern vinegar based sauces which are not so sweet. Send me a message if you want details or a recipe. Best to you!