Sauce: • guajillo chiles • dried red ancho chiles (for a little heat, add 2 roasted and soaked puya chiles) • garlic clove • onion • whole allspice berries • cinnamon stick • small pinch cumin • tablet Mexican chocolate • water (about 480 ml) • small piloncillo or a piece (about 1.5 oz / 40 g) • lard or vegetable shortening (about 40 g) •