How do you recognize fresh eggs?
How do you recognize fresh eggs?

Anyone like me who suffers from nervous shortbread, the uncontrollable (and sedative) urge to prepare sweets whenever possible, knows well that the supply of egg buy at supermarket it is never enough.

Then the acute phase of the crisis passes and the eggs remain there, cardboard, with the expiration date stamped on the shell.

By law, the deadline is set by 28 days from the laying, let's say that consuming the eggs a week before this date protects from any problem.

Different story if we eat them raw, or if we need them to prepare a mayonnaise or cream. In these cases it is better to use eggs " extra fresh “, That is, with a deadline set by 7 days from the deposition (there is the wording "Extra" in the package).

A fresh egg manages to take in air, to be frothy, in short, it allows our dishes to make a better impression.

But is there a practical and quick way to check the freshness of an egg?

Yes, it exists, and this video explains it as best it could not.

Take a tray full of water and immerse the egg horizontally. If it stays on the bottom, in place, then it is cool.

Let's take an egg that is a couple of weeks old, therefore not from the first brood. By immersing it, we notice that it tends to rise towards the surface. It is the sign that the egg is no longer fresh.

Finally, let's take an egg that is four weeks old. After immersing it, we realize that it rises, almost floating on the surface of the water. The egg is gone: it's not worth eating alone.


Is there an explanation for these bizarre behaviors?

The egg has a very thin membrane: an air chamber that has the task of protecting the embryo. After a certain period of deposition, usually about twenty days, the membrane widens and begins to take in air.

Just place the egg in direct light to observe the egg membrane and evaluate the thickness of the air chamber.

Ruler in hand, should not exceed more than half a centimeter.

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