Oven Barbecued Ribs
["4 lb. pork spareribs", "1 c. catsup", "1/3 c. vinegar", "1/3 c. brown sugar", "3 Tbsp. Worcestershire sauce", "1 tsp. dry mustard", "1 tsp. paprika", "1/2 tsp. chili powder", "1 medium onion, thinly sliced", "1/2 lemon, thinly sliced"]
["In Dutch oven, add salted water to ribs to cover.", "Cover pan and simmer until almost tender, about 1 hour.", "Drain and place in shallow baking pan.", "In saucepan, combine 1 cup water, 1/2 teaspoon salt, catsup and next 6 ingredients.", "Bring to boil. Cook, stirring for 5 minutes.", "Add onion and lemon.", "Cool.", "Spoon over ribs.", "Cover.", "Chill up to 24 hours.", "Bake ribs uncovered at 350\u00b0 for 45 minutes.", "Baste often.", "Serves 4."]
["pork spareribs", "catsup", "vinegar", "brown sugar", "Worcestershire sauce", "dry mustard", "paprika", "chili powder", "onion", "lemon"]