Tofu is popular in East Asian cuisines.
I always wondered where tofu originated from.
Tofu can be soft but also firm.
What is tofu made of that it can be firm or soft?
Tofu has a subtle flavor and can be used in many dishes.
What is tofu made of?
Tofu has low calories but a lot of protein.
Interesting. Is there anything else that tofu can be cooked with?
Tofu has a lot of iron and maybe calcium
You have quite a bit of knowledge about tofu.  But you still haven't answered my question: what is tofu made of?