Saute 1 onion in butter for 5 minutes. 1 c. water 1/4 c. vinegar 1/3 c. brown sugar or more to taste 2 tsp. prepared mustard 1 tsp. Worcestershire sauce Salt and pepper to taste

Boil ingredients for 10 minutes, then simmer 20 minutes. Form miniature hamburger patties and brown before adding to sauce. Simmer 45 minutes.