Prep the Wood Chips
At least an hour before grilling, soak the wood chips in enough water to cover them
Drain before using
Prep the Ribs
Remove the membrane covering the bones by slipping a dull knife under it.
Then, using a paper towel to grip, pull the membrane away from the bones
Trim the fat from ribs and place them in a shallow roasting pan
Make the Rub
In a small bowl combine all of the rub's ingredients
Sprinkle about half of the rub over the top of the meat and rub it in with your fingers to form an even coating.
Turn the ribs over and repeat the process
Cover the pan with foil and chill until you're ready to grill
Make the Sauce
While the ribs are cooking, make the sauce
In a saucepan over medium heat, warm the butter
Add the onion, and cook for ~ 5 minutes, or until it's just starting to become tender
Add the garlic and cook for a minute or so more
Stir in the rest of the ingredients and bring the sauce to a very slow boil
Reduce the heat and allow the sauce to simmer 20 - 25 minutes
Grill the Ribs
Prep the grill for indirect heat using a drip pan
Add the wood chips
Place the ribs, bone side down, over the drip pan
Grill covered, over indirect medium heat for 1 ½ - 1 ¾ hours, or until the ribs are tender
Brush them with some of the sauce during the last 30 minutes
Serve
Serve ribs with remaining sauce.