Preheat oven to 300 degrees F. Place a wire rack inside a large baking sheet. Set aside.
Gently remove the thin membrane from the back of the rack of ribs with a knife or your hands. It should pull right off.
In a bowl, mix together all your dry rub ingredients. Generously season your ribs with the dry rub on both sides making sure to coat every inch of the rack.
Place the ribs on a large piece of aluminum foil, top side down, then splash them with the apple cider vinegar and liquid smoke. Fold the aluminum foil all around the ribs, sealing it entirely and securely, so no liquid leaks out.
Place in the oven and bake for 3 hours or until very tender. Remove them from the oven. Remove the aluminum foil from the ribs and generously brush them with bbq sauce. Place the ribs back in the oven and broil them for 5 minutes until caramelized. Serve and enjoy!