This spice rub has the great flavor of chipotle peppers. Just make sure that the rub is finely ground before using it. Great on ribs, this rub brings just a touch of heat, but a lot of flavor. This rub is perfect for barbecue ribs on the smoker, barbecue ribs on a charcoal grill, barbecue ribs on a gas grill, or barbecue ribs in the oven.