How is tofu skin produced?

Tofu skin, also known as yuba or bean curd skin, is a thin layer of film that forms on the surface of hot soymilk during the boiling process. The skin is removed and dried, or sometimes sold fresh, and can be used in a variety of dishes.

1. Boiling soymilk: Soybeans are soaked and ground into a slurry, which is then mixed with water and heated to a boil.

2. Formation of tofu skin: During the boiling process, a thin layer of film forms on the surface of the soymilk. This film is composed of proteins and fats that coagulate and rise to the surface.

3. Removal of tofu skin: The tofu skin is carefully removed from the surface of the soymilk using a wooden or bamboo stick. It is important to handle the tofu skin gently to avoid tearing it.

4. Drying: The tofu skin is then dried by hanging it in a cool, dry place. This can be done indoors or outdoors, depending on the climate.

5. Finished product: Once the tofu skin is dry, it becomes a thin, yellowish-white sheet. It can be either stored in this form or further processed into other products, such as fried tofu skin or tofu skin rolls.