Remove membrane covering the bones of the ribs. Sprinkle with salt and pepper.
Prepare grill for indirect cooking. For a gas grill, this means cooking over the unlit burner. See post for charcoal directions. If your grill has a thermometer, you want to the heat to be medium--abbout 325-350F/160-180C.
Place ribs meat side down over unlit section. Close the lid and cook for 1 hour, turning ribs midway through cooking.
Meanwhile, combine the glaze ingredients in a saucepan and heat to boiling, stirring to combine. Reduce heat and simmer, stirring occasionally, for 10-15 minutes or until the glaze has a syrupy consistency.
Brush ribs with the glaze, continuing to cook for an additional 45 minutes, turning and basting both sides of the ribs throughout the final cook time. I basted them every 10 minutes.
Remove from the grill, tent with foil and let the ribs rest 10 minutes. Baste with remaining glaze just before serving.