Zeronimo Fresh White Wine Tonic is the white entry in the brand's wine tonic sub-range. The base is Grüner Veltliner grapes sourced from Burgenland producer Heribert Bayer, a named provenance unusual in the alcohol-free wine tonic category. In place of quinine, Zeronimo uses quassia wood extract as the bittering agent, a botanical alternative the brand positions as a defining characteristic of the recipe.