The pane con la milza, or ‘u pani c’a meusa, (literally bread with spleen) is one of the most popular Sicilian street food. You can have it for lunch or for dinner and it is often served in receptions buffets.
The origin of this dish seems to date back to the Middle Ages, when the Jews living in Palermo worked as butcher, and since they cwould not accept any money for their job (due to their religious beliefs), they were allowed to take home the offal of the butchered animals as reward. They then boiled and fried spleen, lung, windpipe and used them, along with cheese, as sandwich filling that they sold to local gentiles. This tradition is still alive among the Palermitan caciottari (cheese dealers) and many other street-food dealers.
In Palermo, the evening before the feast of the Immaculate Conception (December 7) ‘u pani c’a meusa is a must. It is even a tradition to have it for breakast the day of the party.