BTW, the ultimate time in the fridge is 3 years. I never had a problem with Tongan (KavaByRex) until the very last batch. I picked up my mouse and slammed it into my keyboard. I love Queen Elizabeth II, but she can sometimes really irk me. (I'm autistic, and the British accent just makes her sound bitchier than she really is, so sometimes she'll accidentally trigger a meltdown, especially over a CDMA cellular network). In the future, I won't let anything go past two years.
I was keeping Tongan in reserve because, if you drink too much of it, it won't "Tong." Or maybe I just needed a higher root:water ratio. For those unfamiliar with my term, Tongan kava gives you the feeling that you've just had the world's most brilliant idea, although there's no thought behind that idea. It's just a sudden lightbulb above one's head. I refer to that sensation as being "Tonged."