01 - Peel the thin membrane from the underside of each rack for improved tenderness and better spice penetration.
02 - Combine brown sugar, smoked paprika, garlic powder, onion powder, black pepper, salt, chili powder, and cayenne pepper in a small bowl, mixing until evenly blended.
03 - Coat both sides of each rack generously with the spice rub, pressing it into the meat. Allow to rest at room temperature for at least 30 minutes, or wrap and refrigerate overnight for deeper flavor development.
04 - Set your grill to medium heat (275–300°F) and configure for indirect cooking by banking coals to one side or turning off burners on one side.
05 - Wrap the seasoned ribs tightly in aluminum foil and place bone-side down over the indirect heat zone. Close the lid and cook for 1.5 hours until the meat begins to pull back from the bones.
06 - Carefully unwrap the ribs from the foil and brush generously with barbecue sauce. Place directly over medium heat and grill for 10–15 minutes, turning and basting with additional sauce until the exterior is caramelized and lightly charred.
07 - Transfer the ribs to a cutting board and let rest for 5 minutes to allow juices to redistribute. Slice between the bones into individual portions and serve immediately.