Hunting down Natto. Google helped locate utube videos for starting and "growing" my own batch using store bought natto as a starter. WOW. Very excited! Soy can be used or another dried bean. Little worried about the estrogen in soy-- wish the data was more in depth. One study showed estrogen in flax is a site blocker for human estrogen.... no info on soy yet in that regard.

Checked several stores-- 3-- no luck yet!!