Aaron Franklin (Austin) is famous for his barbecued brisket (and it is excellent). Heres the recipe for his BBQ sauce, which is pretty good but I would leave out most or all of the brown sugar even though its a small amount. Ketchup is already sweet so I dont think sugar is needed unless the vinegar is overpowering.
Aaron Franklins Classic Barbecue Sauce Recipe
Makes about 3 cups
Ingredients:
1 3/4 cups ketchup
1/2 cup plus 2 tablespoons water
1/4 cup plus 1 tablespoon cider vinegar
1/4 cup plus 1 tablespoon white vinegar
1/4 tablespoons plus 11/2 teaspoons brown sugar
2 tablespoons plus 11/2 teaspoons
Worcestershire sauce
1 tablespoon chile powder
1 tablespoon ground cumin
1 1/2 teaspoons kosher salt
1 1/2 teaspoons coarse black pepper
Combine all of the ingredients in a saucepan and warm gently over medium heat, stirring occasionally. There is no need to bring the mixture to a boil, as the idea is just to warm it enough to melt and integrate the ingredients. Once you have done that, remove from the heat and let cool. Transfer to a jar, bottle, squeeze bottle, or however you want to store it. Store in the refrigerator for up to 1 month.