Set Instant Pot to Sauté setting and heat avocado oil for 10 minutes. Add beef to the Instant Pot and brown on all sides, about 5 minutes. Work in batches if needed.
3-4 lb beef bottom round roast or chuck roast, 2 tbsp avocado oil
Leave the beef in the Instant Pot and turn it off. Combine the rest of the ingredients, except cilantro, in a blender and blend until smooth.
1 large onion, 5 garlic cloves, 1 tbsp chipotle powder, 1 tbsp cumin, 1 tbsp dried oregano, 1 tsp chili powder, 2 tsp sea salt, 1/2 tsp ground black pepper, 1 cup bone broth, 1/4 cup apple cider vinegar, 1/4 cup lime juice
Pour the sauce over the meat, close the lid, and cook for 60 minutes on high pressure.
Release the pressure immediately and open the lid. Take out the meat, shred it with 2 forks. You can return it to the Instant Pot on the Warm setting if you aren't eating it right away.
Stir, sprinkle with cilantro, and serve as taco meat, in a burrito bowl, or in any way you want to enjoy it!
Fresh cilantro