Place the first 4 ingredients in a blender and process until smooth.
Cut your meat into large chunks.
Sprinkle the beef pieces with old bay seasoning, sea salt and pepper and rub them on all sides.
Press the SAUTE button on your Instant Pot, and add in the oil.
Once hot, add the meat and sear until nicely browned on all sides, for about 6 minutes.
Add in the chipotle-broth mixture, garlic cloves and bay leaves.
Place the lid on, press the HIGH PRESSURE button, and set it for 60 minutes.
Once the time is up, allow it to natural release for 30 minutes.
Remove the meat from the instant pot and shred using 2 forks.
Discard bay leaves.
Spoon all the liquid from your instant pot, then pour it over the shredded beef and toss to combine.
Serve your Barbacoa beef with sprouted tortillas, chopped tomatoes and green onions.