What it is: It is the process in which the must’s sugar becomes ethyl alcohol by means of the action carried out by the natural yeasts that are present in the skins of grapes (in the bloom) and in the winery itself. It is one of the essential moments in the process of wine-making.
What its purpose is: It is an essential process for the wine to become an alcoholic beverage, albeit, it is not the only way for producing alcohol, as wines produced by means of carbonic maceration (without de-stemming and including the entire grape), also produce alcohol within the berry through an enzymatic process.