Combine chipotle en adobo, salt, Mexican oregano, ground cumin, ground cinnamon, and black pepper in a small bowl to make the pork rub.
Remove the skin and bones from the pork and then cut it into 1-2 inch pieces. Add the meat to a mixing bowl and massage the rub into the pork.
Warm oil in an Instant Pot on saute mode until smoke. Add the pork and let it cook until it begins to brown, for about 5 minutes. Cook in batches and return the meat to the Instant Pot.
Add the onion, garlic, jalapeño, cinnamon stick, bay leaves, orange juice, lime juice, and liquid smoke.
Secure the lid and cook on manual high pressure for 40 minutes, and naturally release for 20 minutes before removing the lid.
Remove the pork from the Instant Pot using a slotted spoon, leaving the juices behind. Let the meat cool before shredding it. Then, spread it onto a rimmed baking sheet.
Preheat the oven to 500° F (260° C). Cover the meat with liquid smoke and cook for 4 minutes, until the top layer becomes crispy.
When broiling the pork at the end, the crispier, the better- I say! After the first broil, I move the pork around on the baking sheet and repeat the process a few times to get the ends nice and crispy.
Nutrition Disclosure:
The nutritional information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for professional advice.