[identity profile] alitheapipkin.livejournal.com 2012-02-20 02:56 pm (UTC)(link)
I don't know about tofu production processes but growing soy is currently a leading cause of deforestation and natural habitat destruction in S America and there is evidence that it trashes soil quality by mining nutrients out of it too.

[identity profile] pozorvlak.livejournal.com 2012-02-20 09:16 pm (UTC)(link)
Huh, thanks. Dammit, this stuff is too hard :-(

We've made tofu at home a couple of times: basically, you soak soybeans, blend them with water, bring it to the boil, simmer it for half an hour, add a coagulant (we used lemon juice), sift out the solid bits and then press them together. It's tedious work that we're glad to outsource.