To make the pork in the Instant Pot, cut pork into big chunks, about 3 inch cubes. Add to the instant pot with the remaining ingredients. Close the valve and manually set the time for 45 minutes. Once the time is up, let it naturally release for 10 minutes before opening the valve. Shred the meat.
To make pork in the Crockpot. Add all of the ingredients to the slow cooker and cook on low for 8-10 hours. Once tender, shred the meat.
To make the Mexican coleslaw
In a bowl mix together mayo, lime juice, salt, and cilantro until well blended. Add coleslaw mix and toss until well coated. Set in fridge until ready to use.