Preheat your smoker to 225° and add some hickory or mesquite wood.
Brush the ribs in the yellow mustard.
Apply the rub liberally to the ribs. (You can do this a few hours before or even overnight if you like.)
Place ribs in the smoker and cook for 3-4 hours until the internal temperature of the ribs is 195°. If the ribs are on the leaner side and don't have a lot of fat, cook them until 165° so they don't dry out. During the last 30 minutes you can sauce the ribs if you like or just leave them with the rub. They are great either way.
Serve and enjoy.
