Barbecued Sliced Beef
["1 1/2 c. chopped onion", "1 1/2 c. catsup", "1 Tbsp. dry or 2 Tbsp. prepared mustard", "1/8 tsp. cloves", "1 Tbsp. Worcestershire sauce", "6 hamburger buns", "2 Tbsp. margarine", "1/4 c. firmly packed brown sugar", "1 1/2 tsp. salt", "1/4 tsp. pepper", "2 Tbsp. lemon juice or vinegar", "12 cooked thin slices beef"]
["In large skillet, cook onion in margarine until tender.", "Stir in remaining ingredients except beef and buns.", "Heat to boiling; simmer 10 to 15 minutes or until beef is heated through.", "Serve on warm buns.", "Makes 6 servings."]
["onion", "catsup", "mustard", "cloves", "Worcestershire sauce", "buns", "margarine", "brown sugar", "salt", "pepper", "lemon juice", "beef"]