Soybean bean curd, also known as fermented bean curd, is a unique condiment. Its main raw materials include soybean, rice wine, salt and sugar. In the production process, a certain amount of salt will be added to make the sufu salty and fresh in taste. Sufu is rich in nutrition, containing a lot of protein and calcium, as well as bioactive components such as soybean isoflavone and soybean peptide. These ingredients make sufu have various nutritional values, and it is also called "vegetarian cheese" in China.