Remove the filmy membrane on the bone side of the rack. This material blocks flavor reaching the meat and will make the ribs tough. With a paring knife, start at one end of the rack and carefully peel the membrane away from the surface of the last bone. Use a paper towel to grip and remove it with one easy motion. (Slow and steady wins the race here.)
Combine all spices and rub 2 to 3 tbs into each side of rib racks. Store leftover rub in airtight container for future use.
Wrap racks separately in foil and place in oven for 2.5 hours.
While ribs are baking, combine the wet ingredients in a saucepan and bring to a boil. Simmer over low heat until the sauce has reduced to about half.
After the ribs have finished baking, let them cool to room temperature and leave them in the fridge overnight.
Turn your gas grill to medium high. Brush both sides of racks before placing on grill. Baste and turn frequently until the sauce is caramelized and charred.
Recipe by pretty plain janes at https://prettyplainjanes.com/2014/06/12/bourbon-barbecue-ribs/