The spots on the shell of the quail egg, in fact, is the formation of pigmentation during egg laying, is a layer of membrane, so the discoloration is also a normal situation.

Reason:

There is a membrane on the surface of the quail egg shell, just like the skin, below the membrane is the eggshell, there is another layer of membrane inside the eggshell, and then the egg white and yolk, and the discoloration may be due to the fact that the outermost layer of the membrane has been washed away.

Suggestions:

(1) There is no problem with washing off the color of the outside spots of the quail eggs, which can be eaten without worry.

(2) the nutritional value of quail eggs is very high, protein-rich and easy to digest, cooked quail eggs have a flavor, unlike eggs have no taste, fake quail eggs cooked is not this flavor.