Sweetened green tea or black tea fermented with a symbiotic colony of bacteria and yeast called SCOBY ( acronym stands for symbiotic colony of bacteria and yeast) which produces releases probiotic bacteria.
Kombucha becomes carbonated after fermentation, which is why it is fizzy.
Kombucha has the same health benefits as tea which is rich in a group of antioxidants called polyphenols, but it’s also rich in probiotics.