After more than 150 years making the traditional Tuscan cookies called cantuccini (a.k.a. biscotti), Biscottificio Antonio Mattei has embarked on a new biscotto adventure, replacing the almonds of their classic biscotti with large chunks of dark chocolate. The bittersweet flavor of the chocolate, along with incomparable airy, crunchy texture and a yellow tint from the free-range egg yolks used in the dough, put a new twist on tradition.