This soup is a close cousin of 'escabeche de Valladolid,' a specific onion-and-vinegar chicken dish named for the Yucatec city of Valladolid, adapted by Cayo's Mestizo cooks using local ingredients.
A tangy chicken soup loaded with sliced onions, oregano, and a splash of vinegar, simmered until the onions turn soft and sweet. Home cooks and small eateries in San Ignacio serve it for birthdays and special occasions.