I just used everclear, which is 96% ethanol, I believe. I doubt that the little bit of water will do anything, but I know if not sealed properly, the ethanol will attract more water. Who knows then?

I think I'll actually take some of my tincture and make a small batch of changa to be more scientific, and have a side-by-side comparison in a year, and two years. I'll keep it in a similar, dark colored container at a similar temperature, too.

I'm happy to see the interest in this! It's nice to have collaborators!