For the Mayangna, the resulting book, Conocimientos del pueblo Mayangna sobre la convivencia del hombre y la naturaleza: peces y tortugas, has a dual purpose.
Ms. Villegas Becerril's book, "El Libro del Salmorejo: Historia de un viaje milenario" traces the soup's heritage and its incarnations on the way to Andalusia from the Middle East, before the tomato arrived from the New World sometime around 1500.
It is advisable to book well in advance for a room, and to join the crowds in the centre of Piazza del Campo at least four hours before the start for a good view.