Put all ingredients in a large resealable freezer bag.
Remove excess air, seal, and freeze.
Thaw in the fridge overnight.
Cook in slow cooker on low for 7 hours.
Shred. Put the meat on a foil lined tray.
Spoon some of the juices over top.
Broil 5-10 minutes until the edges of the meat start to brown.
Thaw in the fridge overnight.
Remove roast from bag and cut into 3 or 4 even sized chunks.
Add bag contents and roast into the instant pot.
Lock cover and seal steam nozzle.
Choose the meat setting for 50 minutes.
When pressure releases, shred pork.
Broil for 5-10 minutes until the edges crisp up and start to brown.
Serve in flour tortillas.
Topping suggestions include guacamole, salsa, tomatoes, cilantro, avocados, cabbage slaw.