Name: Ancho Chile and cocoa-rubbed flank steak tacos
Yield: 4
Ingredients: 1 tablespoon unsweetened cocoa powder; 1/2 tablespoon ancho chile powder or chili powder; 1/2 tablespoon kosher salt; 1 teaspoon black pepper; 1/2 teaspoon smoked paprika; 1/2 teaspoon granulated garlic; 1/4 teaspoon ground cumin; 1/4 teaspoon ground cinnamon; 1 ½ pounds flank steak; 1 tablespoon vegetable oil; 8 flour tortillas, for serving; Guacamole, for serving; Pico de gallo, for serving