2. Prepare a pot of boiling water, like adding half a bowl of edible salt to boiling water, stirring with chopsticks until the edible salt is completely melted, and then cooling.

3. Prepare a clean and dry glass jar, put the duck eggs into the jar in turn, and finally cool them and pour in salt water, so that the salt water will not pass the duck eggs. Seal the jar and put it where it is not easy to touch.

4. Duck eggs will be preserved for about 20-25 days. Boiling a salted duck egg at this time will produce a lot of oil when it is opened, but it is salty. Salted duck eggs have enough time to marinate, and oil is better.

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