Classification of grape vinegar in grape vinegar

This grape vinegar is the most famous vinegar in grape vinegar. It is a traditional grape vinegar, produced in Modena and Reggio. It is a kind of grape vinegar which is made from grapes through alcohol fermentation, acetic acid fermentation and heating concentration. It is made of grape juice fermented in a series of wooden barrels for many years. It is said that in the process of production, wooden barrels should be replaced year by year according to the time and year of brewing. The brewing of real Italian balsamic vinegar is strictly controlled by Italian laws. Only when the brewing time is at least 12 years can it be called grape vinegar with balsamic vinegar, and only when it is more than 20 years can it be called Stravecchio. Therefore, grape vinegar with black vinegar is the best grape vinegar in Italy. It tastes very sweet and sour and is the best in grape vinegar, while "Stravecchio" grape vinegar is the best.