Birria de Res Tacos (Beef Birria Tacos)
1 bunch fresh cilantro, chopped 1 large white onion, finely chopped 1 pinch dried marjoram 1 pinch dried oregano 1 pinch ground cinnamon 1 pinch ground cumin 1 pinch ground thyme 1 tablespoon olive oil, or as needed 18 corn tortillas 2 dried ancho chiles, stemmed and seeded 2 garlic cloves 2 tablespoons white vinegar 2 teaspoons ground black pepper 4 dried chile de arbol peppers, stemmed and s… 4 pounds beef chuck roast 4 Roma tomatoes 4 whole cloves 6 dried guajillo chile peppers, seeded salt and freshly ground black pepper to taste