Mix all of the dry rub ingredients together.
Rub the pork butt with a thin layer of Dijon mustard.
Thick;y coat the entire pork butt with the dry rub. Marinate overnight in the refrigerator. Let rest at room temp for an hour before smoking.
Preheat the smoker to 250 degrees according to the manufacturer’s directions. Throw in the pork shoulder. Maintain the smoking temp between 240-260 degrees the entire duration of cooking.
Knowing that a 6.5lbs pork shoulder will take up to 12 hours to smoke, at the 10 hour mark use a probe thermometer to monitor the internal temperature. For pork shoulder to shred, you will have to reach an internal temperature between 200-205 degrees.
When the internal temperature is reached, pull the pork shoulder from the smoker. Let rest covered for a hour.
Shred the pork with two large forks.