Tonic water
Description
Tonic water is a carbonated drink with a clear, sometimes slightly amber color and a distinctly bitter-tart taste with citrus notes; the characteristic bitterness comes from quinine, and the sweetness can be adjusted with sugar or sweeteners. Nutritionally, tonic is mainly water and sugars (or substitutes), providing a small amount of calories and sodium, while quinine is present in trace amounts — historically used against malaria, it no longer serves a medicinal purpose, but it can cause reactions in sensitive individuals or interact with medications. In the kitchen, tonic is most commonly used in cocktails, especially with gin, as a base for non-alcoholic drinks, and to enhance fresh, citrus desserts, sorbets, and light marinades; it pairs well with herbs and bitter aperitifs. It should be stored in a cool, dry place; once opened, keep it in the refrigerator and consume within a few days to maintain the bubbles and freshness of flavor.