Oven Method (Cook Time: 4½ hours)
Preheat the oven to 325°F. Heat the oil in a Dutch oven or enameled cast-iron pot with a lid over medium-high heat. Add the seasoned pork to the pot and sear for 3 to 4 minutes per side, until browned. Once browned, pour 1½ cups of water into the pot, then cover with the lid and transfer to the oven. Cook for 3½ to 4½ hours, until the pork shreds easily.
Instant Pot Method (Cook Time: 1½ hours)
Set the Instant Pot to Sauté mode and heat the avocado oil. Sear the pork for 2 to 3 minutes per side, working in batches. (If you are short on time, you can skip this step, though it does add more flavor to the pork!) Once seared, return all the pork to the pot, along with ½ cup of water. Put the lid on the Instant Pot, checking to make sure that the pressure valve is sealed, press Pressure Cook or Manual, and then program it to cook for 90 minutes on high pressure. Once the timer goes off, release the pressure manually by slowly turning the pressure valve from sealed to “venting.”
Slow Cooker Method (Cook Time: 10 hours)
Place the seasoned pork in a 6-quart slow cooker. Cook on low for 8 to 10 hours, until the pork shreds easily.
Once cooked through, shred the meat with 2 forks, removing the excess fat.