Hello, before the family has a chicken farm, whenever more eggs will go to the boiled eggs sent to the orphanage and some schools, so the boiled eggs will often happen, then I will also encounter the problem you mentioned, I can not say that my method will be very effective, but at least it is my experience.

1, the number of hard-boiled eggs is not easy to too much at once, so there will be squeezed broken, cooked, there will be protein overflow shell phenomenon (up to 2 layers can be placed flat).

2, boiled eggs are recommended to warm water in the pot (do not boil water under the water boiling is not convenient at the same time will also give the eggs suddenly heated and cracked).

3, when boiling eggs, it is recommended that the fire is not too large, otherwise it will also be unfavorable to the eggs.

4, boiled in the middle of the egg white solidification can be appropriate on both sides of the egg shell with a needle to a hole, in order to release the air inside.

5, in the boiled egg can be put a little salt, to prevent the egg shell rupture protein overflow.

The above is the advice I give, I hope to help you!

Lastly, if you have ruptured eggs in the boil, I recommend that you can properly consider making tea eggs, taste better at the same time is also more flavorful Oh, tea eggs in detail can be concerned about me, I will have tutorials to give you Oh!