In a large skillet over medium heat, combine the onion, garlic, and whiskey. Simmer mixture for 10 minutes, or until onion is translucent and soft. Mix in the remaining ingredients, ground black pepper, salt, ketchup, tomato paste, vinegar, liquid smoke, worcestershire sauce, brown sugar, and hot pepper sauce.
4 cloves minced garlic, 1/2 onion minced, 3/4 cup bourbon whiskey, 1/2 tbsp salt, 1/2 tsp ground black pepper, 2 cups ketchup, 1/4 cup tomato paste, 1/3 cup cider vinegar, 2 tbsp liquid smoke flavoring, 1/4 cup Worcestershire sauce, 1/2 cup packed brown sugar, 1/3 tsp hot pepper sauce