Amari are Italian-rooted bitter herbal liqueurs that serve as sophisticated modifiers, adding complexity, depth, and bittersweet balance to cocktails. They are produced by macerating herbs, roots, flowers, and spices in a base spirit, yielding a rich tapestry of flavors ranging from intensely bitter to pleasantly sweet. From the minty cool of Fernet to the citrus-tinged brightness of Aperol, amari are essential for building nuanced, layered drinks.