What to do if hard-boiled eggs are hard to peel

Hard-boiled eggs are not easy to peel, but this has something to do with skill. After the eggs are cooked, put them in cold water for a while. This will make the eggshells easier to peel. You can first crack the egg into a small crack, then roll it on the table. This way the eggshell is particularly easy to peel off and there is no residue left. But if the technique is not done properly, the skin will stick to the egg.

The ease or difficulty of peeling a boiled egg is closely related to the tightness of the inner membrane and the egg white, and the tightness depends on the properties of the egg white. The acidity of protein is the most important factor affecting the adhesion between protein and shell membrane. It has been determined that the pH value of freshly laid eggs is around 7. At this time, the adhesion between the inner membrane and the egg white is the strongest, so it is the most difficult to peel the shell after being cooked.

method:

1. After cooking, put it in cold water to cool for a while.

2. Put it in boiling water for five to eight minutes. No need to cool it down. It will separate cleanly.

3. Soak the eggs in cold water for a while before boiling them. The eggs will expand due to heat and contract due to cold, so they will shrink and separate from the shell.

4. Add a small amount of baking soda to the water used to boil the eggs: the weak alkaline nature of the baking soda solution helps separate the eggshells.

5. Eggs are easier to peel after being stored for a week: During the storage process, some of the water in the eggs will evaporate through the pores, creating a space of air between the inside of the egg and the egg membrane (making it easier to peel). The longer the eggs are stored, the higher the pH becomes, which also helps in peeling the eggs.

Usually, the big head of most fresh eggs will be deeply sunken after being peeled, which sticks to the egg white inside, and can be peeled in three layers. Stale eggs are generally easy to peel after being cooked and will not stick. Moreover, the depression is not deep and the egg yolk is not exactly in the middle, but a fresh egg should be in the middle.

Before boiling eggs, you can gently crack them to make a small crack. Don't use too much force though, just a small crack is enough. Of course, this method is not very good.

When boiling eggs, it is best to boil them for 3 minutes without turning off the fire, then turn off the fire and wait for 5 minutes before taking them out and putting them in cold water.

After the eggs are cooked, quickly put them into cold water. This will cause the egg yolk and egg white inside the egg to separate from the shell due to thermal expansion and contraction.