Barbecue Meat Sandwich - cooking recipe

Ingredients

1 lb. ground beef
1 Tbsp. cooking oil
1 large onion, chopped
2 Tbsp. sugar
2 Tbsp. prepared mustard
1 Tbsp. vinegar
1 tsp. salt
3/4 c. catsup

Preparation

Brown meat.
Add other ingredients.
Simmer slowly for 30 minutes.