Thanks to the resurgent popularity of Fernet as the bartender's quaff of choice, Italian amaros as a whole have been making a splash on craft cocktail menus across the city. A category of herbal Italian liqueurs that have long been prized for their digestive properties, amaros range from lightly alcoholic to full-blown boozy. Amaro literally means "bitter" in Italian and the liqueur gets its bite from time spent mingling with a variety of herbs, roots, flowers, bark and citrus peels. Our favorite way to savor this bitter booze? Sub the sweet vermouth in a Manhattan with Averna and sip slowly in a dark bar.