The term amaretto refers to a sweet liqueur made from a basic infusion almonds or the almond-like kernels from the stones of drupe fruits, as well as a related biscotto (usually referred to in the plural, amaretti). Both originate in Italy, where major brands are still produced today.
Amaretto serves a variety of culinary uses. It may be served by itself, with ice ("on the rocks") or with other beverages, alcoholic or non-alcoholic, to create mixed drinks such as the amaretto sour and the Caffe Zurich. The latter drink incorporates amaretto and coffee, an extremely popular flavor combination: other mixed drinks call for Kahla, but in the everyday cup of coffee, nonalcoholic amaretto flavor may be added by means of widely-available flavored syrups, creamers, and so on. Other sweet concoctions blend ice cream or cream with amaretto.