What is "Tonic"?

Tonic is a carbonated beverage that is characterized by its bitter taste and distinctive flavor. It is typically made by combining carbonated water, quinine, and sugar or other sweeteners. Tonic water is often used as a mixer for cocktails, particularly for gin and tonic, and can also be consumed on its own. The quinine in tonic water gives it a slightly bitter taste and a characteristic fluorescent glow under ultraviolet light. Tonic water is a popular alternative to sugary soft drinks and is often consumed as a part of a balanced diet. It is also believed to have health benefits, particularly for treating malaria, although the amount of quinine in commercially available tonic water may not be sufficient for this purpose.