I got a kombucha kit for Christmas and can't wait to try this. The thing with black tea is that it can be a bit heavy for someone with stomach problems (like myself). The fermentation process helps, but to have a green tea base would be much more beneficial. It was actually one of the drawbacks for me when I first began looking at kombucha, I assumed I could switch over to green tea - so it's nice to see an actual name associated with it! :D