Fever-Tree is a British premium mixer brand founded in 2004 by Charles Rolls and Tim Warrillow, based on the principle that high-quality spirits deserve equally considered mixers. The Indian Tonic Water uses natural quinine from Rwandan cinchona bark; the Soda Water is produced with a naturally light mineral composition. Fever-Tree's growth from a specialist spirits trade product to global category leader established the premium mixer segment as a permanent fixture in serious bar programmes.

Fever-Tree in the Bouchon catalogue serves spirits service: tonic and soda for gin, whisky, and aperitif pairings. For venues where the spirit offer extends to quality gin, Japanese whisky highballs, or aperitivo serves, Fever-Tree provides the reference-level mixer to match. The Indian Tonic and Soda Water are the baseline tools for elevated spirit service, and their presence signals to guests that the drinks programme is held to the same standard as the wine and food offer.