1/4 c. vinegar
1 1/2 c. water
1/4 c. sugar
4 tsp. prepared yellow mustard
1/4 tsp. pepper
1 tbsp. (or less) salt
2 thick lemon slices or 1 whole lemon, sliced
2 med. onions, sliced
1/2 c. butter
4 c. cooked chuck roast, shredded
1 (28 oz.) bottle ketchup

To cook chuck roast, bake in oven at 350 degrees until brown. Turn and brown other side. Cover and cook about 2 hours or until it pulls apart easily.

Combine all ingredients and cook for 20 minutes over medium heat in a large saucepan or Dutch oven. Add ketchup and beef. Heat through. Serve on hamburger buns.