These festive cookies are spiced with cinnamon, cloves, and allspice, studded with toasted walnuts, chocolate morsels, and raisins, and spiked with a healthy dose of bourbon that knits the ingredients into a rich and complex goodness. No doubt the recipe has Medieval origins. And because we Italians like to gild the lily, the cookies are finished with lemon-scented icing and colorful sprinkles.