Amaro (italian for "bitter") is an italian herbal liqueur that is commonly consumed as an after-dinner digestif. it usually has a bitter-sweet flavour, sometimes syrupy, and has an alcohol content between 16% and 40%. similar liqueurs have traditionally been produced throughout europe. there are local varieties in germany (where they are called kräuterlikör), in hungary, the netherlands, and france. but the term amaro is applied only to italian products of this kind. amaro is typically produced by macerating herbs, roots, flowers, bark, and/or citrus peels in alcohol, either neutral spirits or wine, mixing the filtrate with sugar syrup, and allowing the mixture to age in casks or bottles...

Source: Wikipedia