01 -
Set Instant Pot to sauté and melt lard or heat olive oil. Add chuck roast chunks and sear until lightly browned on all sides.
02 -
In a blender, combine chipotle chilis, guajillo chiles, ancho chiles, lime juice, apple cider vinegar, and adobo sauce. Blend until smooth.
03 -
Pour the chili sauce over the browned meat. Add diced onion, bay leaves, epazote (or cilantro), Mexican oregano, and ground cinnamon. Stir to combine evenly.
04 -
Place garlic halves cut side down on top of meat. Pour beer or beef broth over all ingredients.
05 -
Seal the Instant Pot and set to meat/stew program. Cook for 60 minutes at high pressure.
06 -
Allow pressure to release naturally for 10 minutes, then perform quick release. Remove meat, discard any excess fat, and shred with two forks. Return shredded meat to pot with some cooking juices to retain moisture.
07 -
Serve shredded beef in tacos, over rice, on tostadas, or as desired.