Genuine shark fin soup is made with shark fins . The fins are processed before being prepared , they remove the skin and then dry them . They are usually washed before with hydrogen peroxide to make their appearance and attractive color. Shark fins are the cartilaginous parts corresponding to the pectoral fins as the dorsal both . The fins are marketed in two ways: dried or frozen . Both need to be soaked before being part of the soup. Frozen version is almost ready for use and only requires one hour prior soaking . There are two types of dry forms : in strips or whole pieces that require more preparation. Shark fins themselves are insipid and virtually no nutritional content . They are valued more for its texture than its flavor.