1. Mix the first six ingredients; rub over ribs. Refrigerate, covered, 30 minutes.
2. Wrap rib racks in large pieces of heavy-duty foil; seal tightly. Grill, covered, over indirect medium heat 1 to 1-1/2 hours or until tender.
3. In a large saucepan, combine glaze ingredients; cook, uncovered, over medium heat 6-8 minutes or until heated through and sugar is dissolved, stirring occasionally.
4. Carefully remove ribs from foil. Place ribs over direct heat; brush with some of the glaze. Grill, covered, over medium heat 25-30 minutes or until browned, turning and brushing ribs occasionally with remaining glaze.Yield:10 servings