4 c  Cooked Beef Strips; 2 X 1/4"
1 c  Ketchup
1/2 c  Cider Vinegar
1/2 c  Butter Or Regular Margarine
1/4 c  Sugar
2 md Onions; Thinly Sliced
2 sl Lemon
2 tb Worcestershire Sauce
4 ts Prepared Mustard
1 ts Salt
1/4 ts Chili Powder
1/4 ts Black Pepper
1/2 c  Water
8    Hamburger Buns

Combine all of the ingredients, except the hamburger buns, in a 4-quart
Dutch oven. Cook over high heat until the mixture comes to a boil. Reduce
the heat to low and simmer for 25 minutes or until the mixture thickens.
Remove the lemon slices. Pour into a container, cover and refrigerate.

TO SERVE:

Warm over medium heat and serve in the hamburger buns.