1 bottle barbecue sauce (any kind)
1/4 c. brown sugar
1 tbsp. Worcestershire sauce
1 clove garlic, minced
Liquid smoke to taste (optional)
1 can beer
1 tbsp. wine vinegar
Dash of Tabasco
1 chopped onion

Combine all ingredients, bring to a boil and simmer until you have only enough liquid left to fill barbecue sauce bottle - or desired thickness. I like it thick.