Birria Tacos - Gerardo Lopez

Ingredients

• 2 kg beef shank or lamb ribs
• 1 tbsp black pepper
• 4 ancho chillies
• 4 guajillo chillies
• 1 morita chilli (replace with dry chipotle chillies)
• 12 tomatoes
• 2 cloves
• 2 bay leaves
• 1 tsp thyme (dry)
• 1 tsp marjoram
• 1 tsp oregano (preferably mexican oregano)
• ½ cinnamon stick
• 8 garlic cloves
• ½ white or brown onion
• ¼ cup apple cider vinegar
• 2 cups water
• Salt to taste