@meena @athairbirb @jon Apologies, it's morning and I'm defo not running at full wattage yet: tempeh *is* a fermentation, just not considered a bacterial one. I've seen a paper that discovered b12 in it but provided no explanation, and it's possible this only applies to traditional tempeh and not hyper-parameterised, single-species western fermentations of fungi only. No data there.