Combine all ingredients, except pork roast
Put pork roast in large plastic bag.
Pour marinade over pork
Marinate at least 4 hours in refrigerator, or overnight
Remove pork roast from marinade, reserving marinade
Bake at 350 F for 30 minutes per pound, basting occasionally
Simmer remaining marinade for at least 5 minutes, serve drizzled over sliced roast