Kombucha is a fermented tea that is a widespread favorite in the US. It is also a popular drink in other parts of the world. It is made from black or green tea, sugar, lemon, and yeast. Kombucha is available in many different flavors, including raspberry, peach, and blueberry. It is often brewed for at least two weeks. The fermentation process creates a type of probiotic in the tea. This is what makes kombucha such a popular drink. Kombucha is often consumed with a meal. Some people drink it without adding anything to it. It is often mixed with ginger or other spices. The fermentation process also creates alcohol. Alcoholic fermentation of black tea is the most common way to produce kombucha in the US. However, if you drink kombucha without adding anything to it, you will not get the probiotics. This is why some people think that drinking kombucha is bad for your stomach.