Bring a small saucepan of water to a boil, submerge the ancho chilies, transfer off of the heat and set aside for 20-25 minutes
Once the ancho chilies are rehydrated, transfer them into a blender along with a medium yellow onion, 5 large cloves of garlic, 1/2 cup of beef broth, 1/4 cup of fresh lime juice, 2 tablespoons of apple cider vinegar, 1 tablespoon of cumin, 2 teaspoons of salt, 1 teaspoon of Mexican oregano, 1/4 teaspoon of ground cloves and a large pinch of black pepper. Blend until smooth and set aside for now
Cut the chuck roast into large chunks, pat them dry with paper towels and season generously with salt and black pepper
Add 2 tablespoons of butter into an insta pot set to sauté or a crockpot set on high
Once the butter has melted and the surface is hot, sear the seasoned beef cubes on all sides (work in batches to avoid crowding the pot)
Remove all beef from the pot, add 1 cup of beer or beef broth and use a wooden spoon or stiff spatula to work up any brown bits
Return the beef into the pot along with the adobo sauce
Pressure cook for 1 hour or set your crockpot to high and cook for 6 hours
Once cooked, shred the beef and mix to combine with the sauce
Enjoy hot or at room temperature
Store leftovers in an airtight container in the refrigerator