It is a flat, round pie consisting of a covering of thin, crispy dough covered with powdered sugar containing a moist stuffing, similar to English mincemeat, with a pronounced spicy flavour. The traditional recipe, which involves a production cycle of 3 days, has been documented since the fourteenth century. The ingredients are: toasted bread, amaretto(macaroons), nuts, honey, sugar, pine nuts, raisins, cloves, nutmeg, cinnamon, orange zest, white wine. The name refers to the “spongia” (sponge) because of the solidity of the filling, as well as for the pitted surface of the pie crust covered with powdered sugar obtained from a particular method of sugar processing.