Push the saute button on your Instant Pot. Cut the pork shoulder into 4 pieces.
Add 2 TBS oil to the inner pot and saute the pork on all sides for about 2-3 minutes. When done push cancel and add chopped onion and 2 cups of chicken broth or stock.
Close the lid and seal the valve. Push meat/stew and adjust the time to 45 minutes.
When time goes off, allow for a 10 minute natural release then release any remaining pressure after the 10 minutes.
Take the pieces of pork from pot and allow to rest before shredding. After 5 minutes, shred the pork and add back to sauce in Instant Pot.
Using taco shells/wraps of choice, add shredded pork and top with your favorite items. I topped with avocado, sour cream and cilantro.