Tonic water

Tonic water is a carbonated soft drink that is often used as a mixer for alcoholic beverages, particularly gin and tonic. It has a distinct bitter taste, which comes from the presence of quinine, a compound originally used to treat malaria. Tonic water typically contains sweeteners, such as sugar or high-fructose corn syrup, to balance out the bitterness of the quinine. Some varieties may also include natural flavors, citric acid, and preservatives. The drink is clear and effervescent, with a refreshing quality that makes it popular in cocktails and as a standalone beverage.