Crockpot Birria Tacos

For the Sauce

• 2 dried guajillo peppers
• ⅓ cup chipotle paste Chipotle in adobo
• ¼ cup red wine vinegar 60ml
• 1 tbsp Worcestershire sauce
• 5 tomato seeds removed, fresh
• 1 tbsp tomato puree
• 1 onion , roughly chopped
• 4 garlic cloves
• 1 tbsp brown sugar
• 1 tsp salt
• 1 tsp cumin ground
• 1 tsp smoked paprika
• 2 tsp oregano dried
• 1 tbsp oregano optional, fresh
• 2 beef stock cube crumbled
• 3 bay leaf
• 1 cinnamon stick

For the Birria

• 2 pounds chuck steak or brisket or braising steak, cubed
• 1 cup water 240ml

To serve

• 8 corn tortillas or as needed
• 1 cup mozzarella cheese or Oaxaca cheese if you can find it, grated
• 1 onion diced
• cilantro (coriander)
• lime