Get the shoulder/pork butt ready by removing any packaging and excess moisture from the pork with a paper towel.
Score the fat cap of the pork with a sharp knife.
Slather over the yellow mustard to use as a binder.
Cover the pork liberally with the BBQ/Burger Rub, salt, and black pepper.
Load the pellets, prime, and set the Pit Boss to a grill temperature of 225°F. Wait until temp.
Place the pork directly on the grates of the Pit Boss with the fat cap down.
Insert the meat thermometer into the thickest part of the meat.
Begin basting the pork butt with the BBQ sauce & spritzing with the vinegar every 60-90 minutes.
Smoke for 8-10 hours until the internal temperature reaches 165°F.
Remove the smoked pork shoulder from the Pit Boss without removing the probe.
Tightly wrap the pork in foil or some butcher's paper and let the pork rest.
The pork will be ready when the internal temperature reaches 205°F.
Shred the meat into pulled pork.
Build the burger! Get a bun, some coleslaw, pickles, and red onion!