2     tablespoons   butter
1     cup           minced onion
1     tablespoon    minced garlic
1/2   cup           sour mash bourbon
1/2   cup           ketchup
1/2   cup           maple syrup
1/4   cup           balsamic vinegar
2     tablespoons   lemon juice
2     tablespoons   diced canned chipotle peppers
1     tablespoon    adobo sauce (from peppers)
1     tablespoon    Worcestershire sauce
2     teaspoons     Dijon mustard