


*that's* a thing I should DIY, it's too expensive to buy in Germany in the quantities I'd consume in Japan and plus I can only get it going in person to a larger-size asiamarkt (because many brands have fish sauce in it, and the German labels is spotty, so I need someone who can read kanji to make double sure there's no fish in the nattō, and I'm the only person I know who can read kanji and I feel comfortable asking to do groceries for me.)
nattō isn't fiddly to make, is it? I think it's basically a matter of getting the starter culture? but how expensive is the starter culture in Germany, I don't think it's a thing like yoghurt or kefir that you can keep reproducing…?
hmm, worse than I thought: it's fiddly with contamination and wants warm temperatures to incubate, it's more work-intensive than kimchi.
but better than I thought: you can in fact propagate a culture by mixing in the last spoonful of your previous batch with fresh soybeans to continue