instruction: What is kombucha?
output: Kombucha is a fermented tea that is often fizzy or carbonated, and a bit sour. Kombucha typically has a low concentration of alcohol, however some kombucha can be made with higher levels of alcohol content. Kombucha is fermented for a number of days and then bottled with various flavor enhancing ingredients such as syrups, herbs, juices or fruit. Kombucha can be made by brewers at home with basic ingredients and materials, and it can also be mass produced. Kombucha is made from the combination of typically black tea, sugar, and a SCOBY aka a symbiotic culture of bacteria and yeast.