1/4 c. vinegar
2 tbsp. sugar
1/2 tsp. pepper
1/4 tsp. cayenne pepper
1 chopped onion
1/2 c. ketchup
1 1/2 tsp. liquid smoke
1/2 c. water
1 tbsp. prepared mustard
1 1/2 tsp. salt
1 thick lemon slice
1/4 c. butter
2 tbsp. Worcestershire sauce

In saucepan, mix vinegar, water, sugar, mustard, pepper, salt, cayenne, lemon, onion, and butter. Simmer, uncovered, for 20 minutes. Add ketchup, Worcestershire sauce, and liquid smoke. Bring to a boil. Store, covered, in refrigerator.