Trim excess fat from ribs. Place ribs and salt in 4-qt. saucepan or Dutch oven. Cover with water, bring to a boil. Cover; simmer 1-1/2 to 2 hours or until tender. Meanwhile, saute onion in oil until tender. Add remaining ingredients; simmer 15 minutes. Drain ribs. Place on rack in broiler pan or over ash-colored coals on outdoor grill so meat is 6 to 7 inches from heat. Broil 10 minutes, turning occasionally. Baste ribs with sauce; continue broiling about 10 minutes, turning and basting frequently with sauce. Serve with remaining sauce, if desired. NUTRITIONAL ANALYSIS per serving: * calories 355 * carbohydrates 30 g * protein 34 g * fat 11 g * calcium 32 mg * sodium 580 mg * cholesterol 100 mg * dietary fiber 0 g