1 lb. hamburger
1/2 c. milk
1/2 c. bread crumbs
1 tsp. salt
2 tbsp. Worcestershire sauce
2 tbsp. vinegar
3 tbsp. sugar
1/2 c. ketchup
1/2 c. chopped onions

Combine the first four ingredients and roll into balls; brown in skillet. Combine remaining ingredients and pour over meatballs in a baking dish. Cover and bake at 325 degrees for 1 to 1 1/2 hours.