Step 1

Place pork, jalapeños, garlic, salt, oregano, pepper, coriander, and cumin in Instant Pot. Toss with your hands until well combined. Seal lid and cook on high pressure for 35 minutes.

Step 2

Release pressure manually. Using a slotted spoon, transfer pork to a large bowl; fish out jalapeños and garlic and discard. Shred meat with two forks or your hands. Pour cooking liquid over meat and toss to combine.

Step 3

Working in batches, transfer shredded pork to a large nonstick skillet set over high heat and cook, undisturbed, until underside is well browned, about 5 minutes. Toss and continue to cook, tossing occasionally, until some of the edges are caramelized and crisp, 5–7 minutes longer. Using a slotted spoon, transfer to a paper towel–lined baking sheet. Cover with foil to keep warm and moist.

Step 4

Serve carnitas with tortillas and taco toppings alongside (if using).

Step 5

Do Ahead: Carnitas (without crisping) can be made 3 days ahead. Shred, toss with cooking liquid, and let cool; cover and chill. Crisp just before serving.