What is the primary ingredient of tofu?

Tofu is primarily made from soya beans, which are the key ingredient in its production. The process involves soaking, grinding, and boiling the soya beans to create soy milk. This soy milk is then coagulated using a coagulant (often calcium sulfate or magnesium chloride) which allows the proteins and fats in the soy milk to curdle, forming curds. These curds are then pressed into blocks to create tofu.

Soya beans are rich in protein and are a vital source of plant-based nutrients, making tofu a popular protein substitute in vegetarian and vegan diets. The versatility and nutritional profile of tofu are largely attributed to its high soya bean content.