Step 2
Meanwhile, heat oil in a medium saucepan over medium heat. Cook and stir onion in hot oil for 5 minutes. Stir in water, tomato paste, vinegar, brown sugar, honey, and Worcestershire sauce. Add molasses, 2 teaspoons salt, garlic powder, whisky, remaining 1/2 tablespoon ground chile pepper, liquid smoke, onion powder, paprika, and 1/4 teaspoon black pepper. Bring to a boil, then reduce heat. Simmer uncovered until sauce thickens, about 1 hour and 15 minutes. Remove from heat and set sauce aside.