Barbecued Hamburger
["1 lb. hamburger", "1/2 c. ketchup", "2 Tbsp. vinegar", "2 Tbsp. sugar", "1 Tbsp. Worcestershire sauce", "1/2 c. chopped onion", "1 tsp. salt", "pepper to taste"]
["Brown meat and onion; drain grease.", "Add other ingredients. Mix together.", "Put in skillet and cook on low heat for 20 minutes or until done.", "Eat on buns."]
["hamburger", "ketchup", "vinegar", "sugar", "Worcestershire sauce", "onion", "salt", "pepper"]