Birria Tacos Recipe

Name: Birria Tacos Recipe
Prep time: 20 min
Cook time: 1 h 40 min
Total time: 2 h
Cuisine: American, Mexican
Ingredients: 1.5 lb beef shank; 1 lb sirloin (or other roast/steak); 3 dried guajillo peppers (see notes); 1 can chipotle peppers in adobo; 1/4 cup vinegar; 1/2 cup crushed tomatoes; 5 cloves garlic; 1 tsp dried oregano; 1/2 tsp smoked paprika; 1 tsp cumin; 1 medium onion (chopped); 1 cinnamon stick; 2 bay leaves; 6 whole cloves; chicken stock to cover (sodium free, about 1 quart); 4" corn or flour tortillas (as needed, 12-16); 1 medium onion (chopped, optional); 1 bunch cilantro (chopped, optional); 1 cup mexican cheese blend (grated, optional)