Cannoli are Sicilian pastry desserts. The singular is cannolo (or in the Sicilian language cannolu), meaning "little tube", with the etymology stemming from the Latin "canna", or reed. Cannoli originated in Sicily and are an essential part of Sicilian cuisine. They are also popular in Italian American cuisine and in the United States are known as a general Italian pastry, while they are specifically Sicilian in origin (in Italy, they're commonly known as "cannoli siciliani", Sicilian cannoli).
Cannoli consist of tube-shaped shells of fried pastry dough, filled with a sweet, creamy filling usually containing mascarpone. They range in size from "cannulicchi", no bigger than a finger, to the fist-sized proportions typically found in Piana degli Albanesi, south of Palermo, Sicily.