Thanks for all the advice. Sounds like a good rinse with warm water, and I'm going use some boiling water also so I get some, not all, of the tannins out.
I like the soaking of future-leaf-additions-in-a-jar idea. I'll give that a try.
Nice to know the pH is not drastically affected by the IAL (another acronym to learn!)
All good stuff. Appreciate the help!