We ate the meusa (spleen) sandwich and it was good! We ate it at the Antica Focacceria di San Francisco. If the church is open you can stop in. We tried twice but it was closed, but on the third try it was open and there were only two other people in the church. An organist and violinist were practicing for an afternoon wedding. They were playing Pachelbel's Canon. What an experience! In a trip filled with so many highlights, this was one of the best.
If these are not on the trip itinerary you might visit Palazzo dei Normanni, the Duomo, Quattro Canti, Oratorio di San Lorenzo, Piazza Pretorio and the 'fountain of shame'.
We also enjoyed the restaurant Il Pipino Rosso not far from Quattro Canti.