1: Set up your smoker following the manufacturer’s instructions and heat to 250°F. Add the wood as specified by the manufacturer.
2: Slice the 2 racks of spareribs into individual ribs. Arrange on a wire grid over a rimmed sheet pan.
3: Combine the ingredients for the rub in a small bowl and mix with your fingers, breaking up any lumps in the brown sugar. Season the ribs on all sides with the rub. Arrange the individual ribs on a wire rack over the sheet pan so you can use the wire rack to place all the ribs into the smoker at the same time.
4: Place the ribs on their rack in the smoker and cook for 1 hour.
5: Meanwhile, place the vinegar, Worcestershire sauce, and hot sauce in a spray bottle. Shake to mix, then spray the ribs well. Continue cooking the ribs for another 3 to 3-1/2 hours, or until done, spraying every 45 minutes. The ribs are ready for saucing when the meat has shrunk back about 1/2 inch from the ends of the bones.
7: Cook the ribs for an additional 20 to 30 minutes to sear the sauce into the ribs.
