Orange Country Style Ribs

6 ounces tomato paste
1/2 cup brown sugar, packed
1/4 cup frozen orange juice concentrate, thawed
2 Tbs. red wine vinegar
1 Tbs. prepared mustard
1 Tbs. Worcestershire sauce
2 lbs. country style pork ribs, cut into 1-rib portions

Prepare grill. Combine all ingredients, except ribs, in a bowl.
Season with pepper to taste and mix well. Place a large piece of
foil over coals beneath grill to catch drippings. Place ribs on
grill about 6 inches above slow coals. Close hood and cook about 20
minutes. Turn ribs and cook covered, 20 minutes more. Brush ribs
with sauce and cook, covered, 25-35 minutes more or until cooked
through, turning and brushing frequently with sauce.