Biscotti are twice-baked cookies (or biscuits) originating in the Italian city of Prato. The biscuits are oblong-shaped, made dry and crunchy by cutting the loaf of dough while still hot and fresh from the first oven baking.
Created originally to survive long sea voyages with minimal spoilage by virtue of their low moisture content, eating them is usually associated with dunking them in espresso coffee. Whether you eat them As Is, dunk them in coffee, milk or wine, just enjoy.