Chili Con Carne

Name: Chili Con Carne
Ingredients: 6 large dried guajillo chiles; 6 dried chiles de arbol; 2 tbsp. rendered bacon fat; 1 lb. beef shoulder, cut into 1/4″ cubes; 1 lb. pork shoulder, cut into 1/4″ cubes; 5 cloves garlic, finely chopped; 1 small yellow onion, finely chopped; 1 tbsp. dried oregano; 1 tbsp. ground cumin; 1 tbsp. flour; 1 1⁄2 cups beef stock; Kosher salt and freshly ground black pepper, to taste