Grampa Crosby'S Sloppy Joes - cooking recipe

Ingredients

1 medium onion, chopped
1 lb. hamburger
1 tsp. vinegar
1 Tbsp. sugar
1 Tbsp. prepared mustard
1 tsp. Worcestershire sauce
1/2 c. catsup
salt
pepper

Preparation

Cook onion and hamburger together; drain.
Add remaining ingredients; simmer about 15 minutes.
Salt and pepper to taste. Spread over hamburger buns and serve.