1 lb. hamburger
1 onion, chopped
3/4 c. catsup
1 1/2 tbsp. mustard
1 tbsp. sugar
1 tbsp. Worcestershire sauce
1 tbsp. vinegar

Fry hamburger and onion. Drain off grease. Mix remaining ingredients and pour over hamburger. Simmer for about 20 minutes. Stir occasionally. Serve in hamburger buns. Makes 4-6 servings.