As an absolute wine lover, i can say dry wine is simply a wine that has no residual sugar, which means it isn’t sweet. When grape juice converts to wine, alcohol is produced in the fermentation process because yeast eats up all the sugar present in the juice. In many wines, the winemaker stops the fermentation process before the yeast has time to eat all the sugar, leaving the wine a touch sweet. When a winemaker leaves a little sugar behind, we call this residual sugar. To make a dry wine, the winemaker will instead let the fermentation process finish completely, allowing the yeast to consume all the sugar present. No more sugar, so no sugary sweetness; the wine is therefore dry.