Second washing: blanch with boiling water. There is a film on the back shell to be brushed off with a wire brush, and there is also a film on the sole of the foot to be removed.
Three stews: add onion, ginger and medlar to the ingredients. It is best to stew with ribs and chicken, which is more nutritious, otherwise it will easily get angry. Add salt, chicken essence and a little pepper before cooking.