2 med. onions, chopped
1/2 med. green pepper, chopped
2 ribs celery, chopped
2 tbsp. butter
1 c. brown sugar
1/3 c. vinegar
1 (8 oz.) can tomato sauce
Ketchup
2 lbs. VERY thinly sliced ham

Saute' onions, pepper and celery in butter until soft. Add brown sugar and vinegar; heat, stirring, until the sugar is dissolved. Add tomato sauce and heat. Add ketchup to taste. Simmer 15 minutes. Add ham and heat. Serve on hamburger buns.