Heat avocado oil in a cast iron skillet over high heat for 4-5 minutes.

Liberally salt and pepper beef, add to hot skillet, and sear on both sides, 5-6 minutes a side.

Add beef to crockpot with remaining ingredients, and stir. Cook on low heat, covered, for 8 hours.

After 8 hours, remove beef to a rimmed baking sheet, and shred with 2 forks.

Remove bay leaves and cinnamon stick from crock pot and discard.

Using a high powered blender or immersion blender, blend everything until a smooth sauce forms. If using a standard blender, allow liquid to cool to warm, then carefully work in batches in the blender, being careful not to overfill.

Transfer sauce back to crockpot to keep warm.

Add 1 ½ to 2 cups of sauce to shredded beef and toss to coat.

Dip doubled up tortilla into consome, and lay flat in frying pan with a bit of avocado oil or neutral oil over medium heat.

To one half of the tortilla, add cheese, then meat, and top with diced onions and cilantro leaves.

Fry 2-3 minutes over medium heat, then flip other side to make a half moon.

Add a small ladle of consome to the top of the tortilla.

Flip over, and fry 2-3 minutes more.

To make the Beef Birria in your Instant Pot, cut the beef into 2” chunks, sear the meat, add the braising liquid ingredients, and cook for 60 minutes at high pressure, with a manual release. Follow same steps as Crockpot recipe for meat/consome after cooking.