If you want your carnitas right away, there is no better method than the pressure cooker. This instant pot carnitas recipe takes very little prep time, and only about 50 minutes of cooking time. Lime-infused pickled onions make a tasty topping, take just a few minutes to prepare, and can be made a day in advance. Use the suggested garnishes or add your family's favorite toppings. Sour cream, avocado slices or guacamole, cheese, and salsa verde are some other excellent choices.