Zucca all’Agrodolce (Sweet-and-Sour Winter Squash)

Sicilian zucca all’ agrodolce is also called fegato di Settecannoli (or ficatu ri sette cannoli in Sicilian) — liver from Settecannoli. That’s the fountain with seven spouts in the piazza at the center of the Vucciria market in Palermo. Long ago, in the days when rich and poor lived close together, it’s said that the poor smelled the liver cooking in th…