I reckon that there is some relationship to making your own micro brew beer as well so JB might chime in on this as he does make his own brew. I didn't realize that fermentation was such a large subject. There is certainly a lot of variation of methods as to the right way to make Kombucha tea.
One thing of note is the alcohol content. Since it is sold in stores in bottles, and since it does indeed contain some alcohol, even if a very low content, it could fall under the jurisdiction of those that control alcohol in the government. So in an effort to prevent variations I think they have them pasteurize those brands to prevent them from further fermentation in the bottle and therefore may reduce some of the beneficial effects of the Kombucha (Cha in Korean means tea and the name of the person that cured the emperor of an illness with it in China was named Kombu so it was named Kombu's-tea or Kombucha.)(?). (But then the mushroom is considered Kombucha as well so who knows.)
Apparently there are many benefits from drinking Kombucha and it can be made using different types of tea but usually not with added ingredients such as with English Breakfast tea which contains Bergamot. It has to do with the yeast of the mushroom acting with the tea to create the necessary fermentation to digest the sugar which can be interfered with by the oil of Bergamot. Many things can be fermented however which can create many different types of drinks and various amounts of alcohol. But in this case we want the health ingredients of the Kombucha tea as it can balance out the body so it can actually do the healing since the tea probably can not do much on it's own other than in the case of the detoxifying effect of the contents of the acids created in the fermentation process. Some say it taste good and drink it a lot.
So anyway, if you have anything to add or discuss, please chime in especially if you have had experience with it. To me it is a fascinating subject while anything that can prevent diseases to me is fascinating, in this day and age of cancer rates increasing at an alarming rate, you'd think everyone would be interested in finding something that could help our immune system to fight off these illnesses. I'm always looking for helpful methods to avoid having to pay doctors and hospitals because I'm not in the business of supporting those entities. I'm glad they are there when needed but it's not my job to fund them. I'd rather die in my sleep healthy than suffer for years broke and sick in a hospital any day.
Here is a site with some really good scientific information based on research:http://www.phoenixhelix.com/2013/03/25/ ... vs-truths/