Thanks for this helpful post. I have been wondering whether Iodine kills off good and bad indiscriminately and I don't think it does, but your example of its being possible to ferment seaweed makes me more sure.
I make my daughters a milkshake using egg yolk, milk, and honey with a drop of iodine in the night and I am hopeful it doesn't wipe out whatever's good about those things. We get them all at the same farm and I could live off that stuff (I get some of the milkshake, too!)
Best to all,
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