Festival del Chile en Nogada in Puebla
Held in Puebla each year during the chile en nogada harvest season, roughly late July through September, this festival celebrates the dish said to have been created by Augustinian nuns in Santa Monica convent to honor Agustin de Iturbide. Restaurants across the city compete to serve the best version of the walnut-sauce-covered stuffed poblano, whose green, white, and red colors echo the Mexican flag.
Few Mexican dishes carry as specific and well-told an origin story as chile en nogada.