If you are seeking a very unique flavored bbq sauce for your next barbeque then you must try bourbon bbq sauce. This is a very unique sauce that only you will know the secret ingredient.The most popular bourbon bbq sauce needs the following items to prepare, ½ to ¾ cup of your favorite bourbon, ½ cup of chopped onions, 4 minced garlic gloves, 2 cups of ketchup, 1/3 cup of white vinegar, 3 tablespoons of Worcestershire sauce, ½ cup of brown sugar, ¾ cup of molasses, ¼ cup of tomato paste, a small.