Cipollina. Catania considers itself as Palermo’s official challenger when it comes to food in Sicily. For the “baked goods” category, the Palermo sfincione is answered here with the Cipollina: a crunchy puff pastry stuffed with stewed onions, tomato sauce, mozzarella and ham . Before getting it into your mouth, the onion gets to your nose first: the unmistakable aroma of onions sizzling in a pan spreads through the streets of the city, for a mouth-watering olfactory prelude.