It’s the easiest way to separate fresh eggs from older eggs.

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Mygrandmother used all of the trickswhen she cooked.

One thing I very rarely saw her do was check packages for freshness dates.

Brown eggs in an egg carton

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However, she had other ways of testing ingredients for freshness.

Turns out, she was onto something.

If the egg sinks to the bottom, its fresh.

Brown eggs in an egg carton on a wooden kitchen counter next to a gas stovetop

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If your egg floats to the top, its old, but dont let the test trick you.

The egg may still be edible.

Why the Freshest Egg Sinks

Egg shells are porous.

That means whats inside can slowly evaporate over time.

As an egg ages, it starts to lose moisture through those tiny pores.

An air pocket takes up that empty space.

As the egg ages and continues to lose moisture, the air pocket gets larger.

This makes the egg less dense and more buoyant, which will eventually cause it to float.

Next, initiate the carton and inspect the eggs.

Look for cracks, stickiness, or discoloration.

you’re free to also give the eggs a sniff.

If they smell awful, theyre not safe to eat (makes sense).

It begins with January 1 as 001 and continues through December 31st as 365.