In your Instant Pot or pressure cooker, add olive oil. Select the saute setting and heat oil.
Sear both sides of your roast in oil.
Add onion, garlic, lime zest, lime juice, chipotle pepper, spices, tomato sauce, vinegar, and beef broth.
Using the manual mode, cook for 90 minutes and use a natural pressure release.
Remove beef from pressure cooker and shred.
Meanwhile set pressure cooker to saute and reduce liquid by about a third.
Return shredded meat to liquid.
Serve on tacos, burritos, quesadillas, or salads. Serving suggestions in notes.
