Wikipedia
'Nzuddi
The 'nzuddi are traditional cookies, typical of the provinces of Messina and Catania. They are spherical, slightly flattened, golden-colored cookies, made of flour, sugar, almonds, cinnamon, egg whites and ammonia.
Historically, the cookies were made for the feast of Our Lady of the Letter, Saint Patron of the city of Messina, on June 3. These cakes were originally prepared in the monastery of the Vincentian Sisters, and the name 'nzuddi derives from the abbreviation of the name "Vincenzo" (Vincent) in Sicilian language.