"Rum balls have always been a little too boozy for my taste, but mellowing out the alcohol with a lower-proof amaro brings an herbal, bittersweet depth without the sting in a rich and fudgy, truffle-like ball," says Brad Parsons in his new book Amaro. His recipe for bitter amaro balls is adapted from Rhonda Ruckman, executive pastry chef of Herbsaint, Cochon Butcher, Calcasieu, and Pêche in New Orleans.