The oil in the bottled fermented bean curd produced in Sichuan is edible. The oil in sufu is the essence of sufu, which can be used to eat hot pot or steamed bread. Sufu, also known as tofu, is a traditional folk food of Han nationality that has been circulated in China for thousands of years. Because of its good taste, high nutrition and smelly smell, its special flavor is deeply loved by people in China and Southeast Asia. This is a lasting delicacy.