Creating Authentic Birria Tacos may seem daunting, but following these simple steps will simplify the process:

1. Prepare Chiles: Soak the guajillo and ancho chiles in hot water for about 20-30 minutes until soft.
2. Blend Marinade: In a blender, combine soaked chiles, garlic, onion, cumin, oregano, black pepper, and salt. Blend until smooth, adding a bit of the soaking water if necessary.
3. Marinate Meat: In a large bowl, toss the beef chunks with the blended marinade. Let it marinate for at least 1 hour, preferably overnight in the fridge for richer flavor.
4. Cook Meat: In a large pot, add the marinated beef and pour in the beef broth. Bring it to a boil, then reduce to a simmer. Cover and cook for about 3 hours until the meat is tender and easily shreds.
5. Shred Meat: Once cooked, remove the beef chunks from the pot and shred them using two forks. Set aside in a bowl.
6. Make Consomé: Strain the cooking liquid to separate the solids. Return the liquid to the pot and reduce it slightly to intensify the flavors.
7. Warm Tortillas: In a separate skillet, heat corn tortillas briefly until warm and pliable.
8. Assemble Tacos: Fill each tortilla with shredded beef, adding diced onion and cilantro on top.
9. Serve with Consomé: Serve the tacos with a bowl of the strained broth (consomé) for dipping.

Following these steps will lead you to the creation of Authentic Birria Tacos, where each bite will have you reveling in the delightful combination of crispy, flavorful, and savory elements.