Giesen 0% Sauvignon Blanc Spritz is one of the Spritz entries in Giesen's 0% wine range, providing a lightly carbonated format alongside the still bottles in the lineup. The blend draws on Sauvignon Blanc and Riesling grapes. The base wine undergoes cool-temperature fermentation with lees ageing, then low-temperature dealcoholisation, with carbonation added at bottling.