Sloppy Joes - cooking recipe

Ingredients

1 lb. hamburger
3/8 c. water
1/4 tsp. dry mustard
salt and pepper
1/2 c. catsup
1 Tbsp. vinegar
1 Tbsp. brown sugar
1 small onion, diced

Preparation

Combine all ingredients and simmer for 1 hour.
Serve on hamburger buns.