21. Based in Southwest London, Fever-Tree makes a variety of products including tonic water , ginger beer and lemonade. 22. It is bottled at 42 % and was designed to counteract the sweetness of American tonic water . 23. Because of its intense flavor, the bark of " Remijia " is used for making of tonic water . 24. In 2005, Tonicsoda ( a tonic water ) was the first product line born under the brand Campari. 25. Some manufacturers also produce diet ( or slimline ) tonic water , which may contain artificial sweeteners such as aspartame. 26. Quinine, a bitter medicinal found in tonic water , can be used to subjectively rate the "'bitterness "'of a substance. 27. Brasil Kirin is also known for the long manufacture of the traditional cola-citrus, tonic water and diet soft drinks. 28. However, most tonic water today contains a less significant amount of quinine, and is thus used mostly for its flavor. 29. At Sophia's Italian restaurant a few blocks away, manager Ronnie Hossain joked about jacking up the price of tonic water . 30. It is usually served chilled, though some serve it with tonic water , making a drink called a " Czech and German.
