1, eggs need not be cooked. After washing the eggs, put them in boiling cold water and add salt.

There is a pickling method in Sichuan. Eggs will give oil, but you need to pay more attention. First soak the eggs in white wine for an hour, then wrap a layer of salt in the salt and put them in a box. Be sure to put them in a cool and ventilated place. After more than twenty days, you can use it.