Tofu was born in China more than two thousand years ago and is made a bit like fresh cheese: soy milk is curdled, often with nigari (magnesium chloride), and the curds are pressed into blocks.
On its own it tastes very mild, and that is its strength: it absorbs the flavours around it. The secret is to marinate it, with lemon juice, tamari, spices and herbs, then brown it well until golden. Crumbled by hand it becomes a ragù-like crumble or, with turmeric and kala namak salt, an alternative to scrambled eggs.
There is also silken tofu, very soft, perfect for creams, mousses and sauces.