How is Sherry vinegar made? August 04, 2021 0 13 How is Sherry vinegar made? Sherry Vinegar One of our most renowned gourmet products, produced from one of Spain's most long-established wines, Sherry. What is vinegar? How is Sherry vinegar made? How does this method work? What is vinegar? Vinegar is an acidic liquid used as a "condiment." It is obtained by the action of bacteria of the genus Acetobacter which, in the presence of air, oxidize the ethanol contained in wine and other alcoholic beverages ...