Fermented Tea?

There's no telling what one might find in the office kitchen in the morning. Today, Rich and I discovered a jug of fermenting tea. It's a little difficult to see in the picture, but the jug looked like it was ready to pop. There was a nice hissing sound as I unscrewed the cap to pour it down the drain. It apparently was left sitting on the counter since last Thursday. We didn't try any of it, but I doubt it would be as good as Kombucha is supposed to be.