lbs boneless center cut pork loin roast (remove the fat back from the shoulder , sliced in half at its widest point, This can also be made wi) or 5 -6 lbs pork shoulder (remove the fat back from the shoulder , sliced in half at its widest point, This can also be made wi)
Combine the ingredients for the marinade in a glass or plastic container large enough to hold all the pork (or beef brisket).
Add the pork, turning to be sure it is well coated, Cover and marinate in the refrigerator for 24 hours, turning occasionally.
Preheat the oven to 350 degrees F.
In heavy saucepan, combine the ingredients for the Jack & Coke BBQ Sauce, adding adobo seasoning or salt to taste, heat to almost boiling, and reduce heat to simmer 20 minutes. Cover and set aside.
Place the marinated meat in a roasting pan. Cover the roasting pan with aluminum foil and cook the pork in the preheated oven for 1-1/2 hours. Pour off 2/3 of the liquid in the pan and spread the meat with the barbecue sauce and return it to the oven, uncovered, for another 1-1/2 hours.
When the pork is done, it will shred easily with a fork. Test it, and if it's still a bit difficult to shred, return it to the oven for another 15 minutes and try again.
When the meat is done, taste to see of more salt and pepper is needed, remove it from the oven and shred it with a fork. Slice the rolls in half, pile on the pork, and serve with creamy coleslaw.