With a secret mix of botanical oils, spring water and Quinine from the \"fever trees\" of the Eastern Congo, Fever Tree Tonic Water is wonderfully clean and refreshing. Fabulous on its own over ice and with a slice of lemon or lime, Fever Tree tonic shines when added to gin or vodka. ###Product DescriptionFever-Tree is a producer of premium drink mixers. Charles Rolls & Tim Warrillow researched quinine sources from as far back as 1620 trips to find the purest strains of this key ingredient and 5 iterations of the recipe were tasted before Charles and Tim were happy with the result. Tasting Notes Uniquely clean, sweet and refreshing