I started with the basic Carolina vinegar baste, adding and adjusting, until I came up with a sauce I really like. Warning: This is extremely spicy hot. If you want less heat, cut the number of chipotles!
1 1/2 c. cider vinegar
1/2 c. bourbon, apple cider, or orange juice
1 c. water
2 T. molasses
2 T. salt
1 7-oz. can chipotles in adobo, finely chopped
1 T. red pepper flakes
1 T. black pepper
1 t. cayenne, ground
1 t. liquid smoke
Mix and bring to a boil. Simmer for 30 minutes to blend flavors.