Cantucci or cantuccini, depending on who is writing, biscotti di Prato can be dense and hard to bite into, but when dunked into a glass of Vin Santo, soften into the perfect after-meal dessert.

The cookies were paired with Vin Santo, though today, most Americans pair them with coffee. In the U.S., DiCamillo's Biscotti were made by Italian immigrants in Niagara Falls. In 1979, the ...