Remove the membrane from the back of the rack of ribs.
Season ribs with salt, pepper, garlic rub.
Make the spritz: Open the 6 oz can of pineapple juice with a can opener. Use the same can to measure equal parts honey and apple cider vinegar. Pour everything into a spray bottle, shake well, and set aside.
Smoke ribs meat side up for 1 hour at 185°F.
After 1 hour, spritz the ribs with the mixture of pinapple juice, honey, and apple cider vinegar from a spray bottle, and flip, and continue smoking for another hour.
After the second hour, flip and spritz again, then smoke for 1 more hour (3 hours total so far).
Wrap ribs meat side down in foil. Brush with butter or tallow and add a generous layer of BBQ sauce.
Increase heat to 275°F and return wrapped ribs to the grill. Cook up to 2 hours, probing after 1 hour. Remove when internal temperature reaches 204°F.
Unwrap ribs, brush both sides with BBQ sauce, and return to the grill at 225°F for 15 minutes to set the glaze.
Let the ribs rest for at least 10–15 minutes, then slice and serve with your favorite cookout sides.
Notes
This recipe can be scaled up/down for more or fewer racks of ribs.