I have recently become a Kombucha Mad Scientist.
Taken from the Kombucha Wiki:
Kombucha is the Western name for sweetened tea or tisane that has been fermented by a macroscopic solid mass of microorganisms called a "kombucha colony," usually consisting principally of Bacterium xylinum and yeast cultures. It has gained much popular support within many communities, mentioned by talk show hosts, and celebrities. The increase in popularity can be seen with many commercial brands coming onto the retail market and thousands of web pages about this fermented beverage.
Apparently, Google serves shot glasses of made-from-scratch Kombucha in their Cafe.
From the outside, its sounds and looks somewhat gross BUT its said to be good for you and gives you a sense of well being...still waiting for the well being part...I'm still grumpy in the morning. I think my home brew tastes WAY better that store bought.
Enjoy some videos and if you think you want a kombucha baby scoby (symbiotic culture of bacteria and yeast) let me know, i might have extra.
The mad science part of it is you can experiment with different teas, sugars, and honeys. You can brew till its tangy/vinegary or till its still a bit sweet. My current experiment is trying to get it to ferment a 2nd time and get it carbonated like sparkling cider.