Clean the ancho chilies, remove stems and seeds, then cut into small pieces. Place in small batches in an electric grinder and grind to a fine powder.

Preheat the oven to 180°C (350°F). Place the chicken thighs on a baking tray. Sprinkle with the freshly ground ancho chili powder, salt, and drizzle with vegetable oil. Mix to coat evenly.

Bake for 45 minutes until fully cooked. While the chicken cooks, prepare your tortillas, refried beans, guacamole, and any other toppings. Salsa macha can be prepared in advance.

Once cooked, cut the chicken into small pieces. Set up a taco station with tortillas, chicken, beans, guacamole, and salsa macha. Let everyone assemble their own tacos: start with a tortilla, add beans, chicken, guacamole, and top with salsa macha.

Pair with cold beers or agua fresca and enjoy a festive taco night with your family.