1 lb. ground beef
1 med. onion, diced
2 tbsp. sugar
2 tbsp. wet mustard
2 tbsp. vinegar
1 tbsp. Worcestershire sauce
1 c. bottled chili sauce

Brown onion and ground beef lightly in 1 tablespoon butter. Add other ingredients and simmer for 30 minutes. Serve on buttered hamburger rolls.