How to cook hard-boiled eggs properly

A recipe from cooking-ez.com
1.4M 63.5 November 4th 2013
How to cook hard-boiled eggs properly
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For 4 eggs, you will need:

Times:

PreparationRestingCookingStart to finish
8 min.1 hour 10 min.10 min.1 hour 28 min.

Step by step recipe

1First problem: how to prevent shell from breaking (as in this photo) and white spilling out into the water while cooking?

Egg shells break during cooking for two reasons:

1) Temperature difference, if they go straight from the fridge to boiling water, the shell always (or nearly always) breaks.

Solution: remove your eggs from the fridge at least one hour before cooking.

Note : Eggs don't need to be kept in the fridge.
How to cook hard-boiled eggs properly  : etape 25
22) Because in the bottom part of the egg, the broader end, there is an air pocket (in red on the diagram), and when cooking this air expands and eventually breaks the shell.

You will notice that the older the egg is, the bigger the air pocket, so the risk of the shell breaking is greater with an old egg than a fresh one.
How to cook hard-boiled eggs properly  : etape 25
3Solution: You need to pierce the air pocket so that the air can escape during cooking.

To do this you can use big needle or a small nail (as in the photo), push in it a few millimetres.
How to cook hard-boiled eggs properly  : etape 25
4The aim is to just pierce the air pocket and to make a very small hole.How to cook hard-boiled eggs properly  : etape 25
5Boil a pan of water, and lower in your pierced eggs gently, using a tablespoon.

Leave to cook 10 minutes, no more.
How to cook hard-boiled eggs properly  : etape 25
6If eggs cook longer, yolks will became yellow-green (as in this photo), and develop a sulphurous taste and smell, and white will become rubbery.How to cook hard-boiled eggs properly  : etape 25
7To demonstrate the effect of piercing: on left a pierced egg (shell intact), on right an un-pierced egg (shell broken).How to cook hard-boiled eggs properly  : etape 25
8Cool eggs immediately by putting them into cold water.How to cook hard-boiled eggs properly  : etape 25
9To remove the shell, tap the bottom of the egg on your work surface to break it.How to cook hard-boiled eggs properly  : etape 25
10Do the same with the top of the egg.How to cook hard-boiled eggs properly  : etape 25
11Roll the egg round with your hand to break all the shell.How to cook hard-boiled eggs properly  : etape 25
12Then remove the shell, as if peeling the egg.How to cook hard-boiled eggs properly  : etape 25
13Wash the egg to remove any small pieces of shell, and leave in cold water, or covered in the fridge, until using.How to cook hard-boiled eggs properly  : etape 25
14Another way to cook, probably priceless: Fill the pan with cold water to submerge the eggs (drilled) and bring to boil.

When boiling is reached, cover, remove from heat and let stay for 10 minutes.
How to cook hard-boiled eggs properly  : etape 25

Remarks

Gaston LenĂ´tre, in his books, say that boiling water for eggs should be salted and vinegared. Probably because egg shells are porous, and so that salted water can salt the egg when cooking?
I've tried it, but I don't taste a real difference. What about you?
View this recipe : https://cooking-ez.com/trucs_astuces/recipe-how-cook-hard-boiled-eggs-properly.php
April 24th 2024.
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