Barbecue-Arlene

2 tablespoons butter

2 tablespoons flour

1 teaspoon dry mustard

1 teaspoon salt

2 1/2 pounds hamburger

1 large onion

1/4 cup sugar

1 1/2 cups hot water

1 1/2 cups ketchup

1/4 cup Worcestershire sauce

Brown hamburger and onion; remove. Melt butter and stir in flour until smooth. Add water first and stir well. Add other ingredients. Simmer 1 1/2 hours. Really good.