Kombucha is a fermented tea drink, made by adding a culture of bacteria and yeast to sweetened organic black or green tea. This broad-spectrum yet closely symbiotic colony of beneficial microbes acts to convert the tea and sugar into an amazing range of healthful constituents, including organic acids, enzymes, probiotics, anti-oxidants, B vitamins, vitamin C, anti-carcinogens and collagen. This culture is called a SCOBY (Symbiotic Culture of Bacteria and Yeast).