Wine is a product of the fermentation of sugars. The sugars come from grapes or other fruits such as apples or berries. The fermentation process involves converting the sugar in the fruit into alcohol and carbon dioxide by the action of yeast. As the yeast consumes the sugar, it produces ethanol, which is the alcohol found in wine. The process of fermentation also creates a range of flavor and aroma compounds that give wine its distinctive taste and bouquet. The resulting liquid is then aged and bottled to create the finished product.