
For the Sauce: Combine all the ingredients (except for 1 tablespoon of the bourbon) in a medium saucepan and bring to a boil. Lower the heat to a simmer and cook until reduced by 1/3, stirring often. Sauce should be dark and slightly thickened (about 20 minutes). Turn off the heat and stir in the last tablespoon of bourbon.
For the Ribs: Preheat the oven to 225ºF. Remove the membrane from the back of the ribs. Pat ribs very dry with paper towels and cut each rack in half. Sprinkle a good tablespoon of dry rub on each side of the ribs and press until it’s well-coated.
Lay a large piece of foil on a baking tray and place one rack on it, meat-side up. Pour half the apple juice into this pocket and then fold over and crimp the packet closed. Wrap the packet in a second layer of foil. Repeat with the second rack. Cook for 4 to 4 1/2 hours until the ribs are tender.
Finish the ribs: Coat with BBQ sauce and place under the broiler or on a grill until the sauce starts to bubble. Apply another coat of glaze and cook again until it bubbles and browns. Remove and serve.