To make the rub: In a small bowl combine the rub ingredients.
Trim the ribs of any excess fat. Press the rub into the meat, cover with plastic wrap, and refrigerate for 8 to 12 hours.
Allow the ribs to stand at room temperature for 20 to 30 minutes before grilling.
Sear over Direct Medium heat until evenly browned, about 10 minutes, turning once halfway through searing time. Transfer to a heavy-gauge aluminium pan large enough to hold the ribs in one layer.
To make the sauce: In a medium saucepan whisk together the sauce ingredients. Bring to a boil over high heat. Pour the sauce over the ribs and tightly cover with aluminium foil.
Grill the ribs over Indirect Medium heat until very tender, 1-1/2 to 2 hours, turning once halfway through grilling time.
Remove the ribs from the pan and cut into one- or two-rib pieces. Skim off any fat from the sauce and season with salt and pepper. Serve the ribs hot with the sauce on the side.Servings: