A beverage product derived from leaves of the tea plant (Camellia sinensis).

"While fermentation is also referred to in the production of brewed teas, this is inaccurate. Some herbal teas on the market today include probiotic cultures alongside tea leaves to maintain gut health but the tea itself hasn't been fermented. Most dried teas however don't use live cultures at all during production. Instead, harvested tea leaves undergo a natural chemical process known as oxidation, which also changes the color, flavor and level of health benefits in the resulting brew." [https://eatcultured.com/blogs/our-awesome-blog/fermented-tea]