1 lb. hamburger
1 onion, diced
1/2 c. catsup
1 tbsp. prepared mustard
1 1/2 tsp. sugar
2 tbsp. vinegar
1/4 tsp. pepper
1 tsp. salt

Saute onion and hamburger; drain grease. Add remainder of ingredients. Simmer 1/2 hour or longer. Serve on hamburger rolls.