Yield: 4 servings
Combine mustard, chili powder, cayenne pepper and garlic powder; rub over ribs. Grill ribs, covered, over indirect heat and medium-low coals for 1 hour, turning occasionally.
Combine ketchup, water, onion, juice, oil, oregano, salt, pepper and liquid smoke (optional); mix well.
Add 10 briquettes to coals. Grill 30 minutes longer, basting both sides several times with sauce, or until meat is tender.
Please note that some ingredients and brands may not be available in every store.