Kombucha is a fermented, effervescent drink made from sweetened black or green tea that undergoes fermentation by a symbiotic culture of bacteria and yeast, known as a SCOBY (Symbiotic Culture Of Bacteria and Yeast)
. The fermentation process produces a bubbly, slightly vinegary beverage that contains probiotics, B vitamins, antioxidants, and small amounts of alcohol (usually less than 0.5% in commercial products)
. Originating in China over 2,000 years ago, kombucha spread to Russia, Eastern Europe, and eventually gained popularity worldwide, including in the United States and Europe
. It is often consumed for its purported health benefits, such as supporting gut health, liver function, and heart health, though scientific evidence for many claims remains limited
. Kombucha is made by fermenting sweetened tea with the SCOBY, which metabolizes sugar into alcohol and then into organic acids like acetic acid, producing carbonation and beneficial compounds
. The drink can be homemade or commercially produced and is available in various flavors, sometimes with added fruit juices or spices
. In summary, kombucha is a naturally fermented tea beverage known for its probiotic content and distinctive fizzy, tangy taste, enjoyed both as a refreshing drink and for its potential health benefits
