01 -
Remove pork butt from refrigerator 2-3 hours prior to cooking and pat dry with paper towels after removing packaging.
02 -
Combine brown sugar, salt, garlic powder, onion powder, paprika, chili powder, and cayenne in a bowl; mix thoroughly.
03 -
Sprinkle seasoning rub evenly over pork butt and rub in thoroughly. Optionally, wrap and refrigerate overnight for enhanced flavor, removing a few hours before cooking.
04 -
Pour root beer and apple cider vinegar into the Instant Pot and stir to combine.
05 -
Place the seasoned pork butt into the Instant Pot liquids, then drizzle half the barbecue sauce over the pork.
06 -
Secure lid and set pressure valve to seal. Cook on manual high pressure for 60 minutes (approximately 20 minutes per pound).
07 -
Allow natural pressure release for 10 minutes, then perform quick release to vent remaining pressure.
08 -
Remove pork from Instant Pot, discard excess liquid and fatty bits, shred meat with two forks, then toss with remaining barbecue sauce before serving.