<human>: I've been hearing a lot about kombucha lately. What is it and is it good for you?
<bot>: Kombucha is a fermented tea beverage that has been around for centuries. It is made by adding sugar, tea, and a starter culture of bacteria and yeast to a jar of sweetened tea. The mixture is then sealed in the jar and allowed to ferment for several days or weeks. During this time, the bacteria and yeast convert the sugars into acids, carbon dioxide, and alcohol. The resulting drink has a slightly effervescent taste and a slightly alcoholic content.