Birria Tacos Recipe (Tacos de Birria) - Chili Pepper Madness

Ingredients

• 5 ancho peppers
• 5 guajillo peppers
• 2-3 chiles de arbol (optional for spicier)
• 1 tablespoon vegetable oil
• 1 large white onion (chopped)
• 3 large tomatoes (chopped)
• 5 cloves garlic (chopped)
• 1 tablespoon Mexican oregano
• 1 tablespoon sea salt (or to taste)
• 1 teaspoon cinnamon
• 1 teaspoon cumin
• 1 teaspoon ground ginger
• 1 teaspoon black pepper
• ½ cup apple cider vinegar
• 2 large roasted tomatoes (chopped)
• 4 cups beef stock (separated)
• 4 pound boneless beef chuck (Or you can use beef shank or brisket - try with lamb shoulder. See Recipe Notes.)
• 2 tablespoons vegetable oil
• 16 corn tortillas (You can use flour tortillas.)
• Fixings. Chopped red onion, sliced jalapeno or serrano, fresh chopped cilantro, chili flakes, fresh lime juice.