From China, kombucha made its way to Japan (between 250 and 538).
A Korean doctor who reached Japan is believed to have cured the digestive problems of the emperor at the time with tea fermented with a special mushroom.
The emergence of American sweetened and carbonated beverages on the market has made kombucha or sour bread an unpopular relic.
Western corporations have succeeded, within fifty years, in completely displacing from our culture a beverage that was regularly consumed in central and eastern Europe for hundreds of years.