Amaretti, the famous Italian almond cookies are so popular in their homeland that almost every region has their version of the recipe, using different proportions and combinations of the basic ingredients: sweet and bitter almonds, apricot kernels, eggs, and sugar.
The Sicilian version is made with egg whites, sugar, and both bitter and sweet almonds, preferably the world-famous ones grown in the province of Syracuse, in south-eastern Sicily, around the cities of Noto, Avola, Rosolini, and Canicattini Bagni.