R Overman wrote:
Hi! Natto? - this is new for me. Of course I can google it, but anything you’d like to share?
Natto is a Japanese soybean ferment through a bacteria, bacillus subtilis. It's quite the hardy, spore-forming bug. It's my understanding it has survived trips to space unprotected against vacuum, absolute zero and cosmic radiation. On earth, it can survive inoculation into my hot, pressure cooked soybeans to at least 140F, briefly anyway. I seed some dry spores in a quart (dry volume) of such beans, stir in a couple tbsp brown sugar to give them a jump-start, cover in perforated foil and incubate over the pilot of my gas stove at roughly 105F for about 20 hours. I'll crack the door to modulate the temp. The result is an odd bean ferment with stringy strands of polysaccharide that trail off your utensil like stands of hot mozzarella. Some object to that texture or to it's odor -which I don't find very objectionable in the homemade variety. You can find dry spores for sale imported from Japan, or you can go to an Asian grocery and buy frozen natto in single-serve styrofoam packets that also work passably well to get your own batch going.
A further interesting aside is that it was once used to treat dysentery and was under investigation for it's antimicrobial properties before the advent of modern antibiotics. I've found it useful to have in my own personal pharmacopeia.