Step 1

Cut the pork into large 2 to 3-inch chunks. Place in the Instant Pot.

Step 2

In a small bowl, combine the dried oregano, cumin, chili powder, salt and pepper. Sprinkle over the pork and rub over all sides of the pieces of pork. Add the orange juice, lime juice, onion and garlic to the Instant Pot.

Step 3

Close the lid and turn the steam release valve to the sealing position. Use the Pressure Cook or Manual function to set the cook time to 45 minutes at high pressure. The Instant Pot will take about 15 minutes to reach pressure and then the cook time will begin counting down.

Step 4

When the cook time ends, allow the pot to naturally release pressure for 15 minutes (just leave the Instant Pot alone).

Step 5

Quick release any remaining pressure by turning the steam release valve to the venting position using the handle of a long spoon. Once all steam has escaped and the pin drops down, carefully open the Instant Pot lid.

Step 6

Use two forks to shred the pork, discarding excess fat. You can serve the pork now, or (the best way!) crisp it under the broiler. To crisp pork, spread it out in a single layer on a foil-lined rimmed baking sheet. Add a little of the juices from the Instant Pot to the pork, but not too much. Put pork under the broiler in the oven for 5 to 10 minutes, until the edges start to crisp.

Step 7

Serve in tortillas or as desired.