~ Combine all ingredients, except pork roast. - Put pork roast in large plastic bag (or plastic container). Pour marinade over pork. Marinate at least 4 hours in refrigerator, or overnight. - Remove pork roast from marinade, reserving marinade. - Grill covered (or bake at 350 degrees) for 30 minutes per pound, basting occasionally. ~ Simmer remaining marinade for at least 5 minutes, serve drizzled over sliced roast.