The reason why Mao Tofu has a curd flavor is because of the addition of curd. The reason why Mao Tofu has curd flavor is because in the process of making Mao Tofu, curd or curd juice is added. Curd is a fermented soybean product, which is made from the milk of the bean curd through the fermentation of specific microorganisms, and curd is rich in nutrients such as salts, proteins, and amino acids, as well as having a special aroma and texture.