Fill a glass with water.
Put the egg in.
If it sinks and lies horizontally, it’s a fresh egg.
If it floats, it’s an old egg. In that case, it’s best to use it as soon as possible or discard it.
This test works because over time, the contents of the egg lose moisture and the internal space fills with air, causing it to float.
Why should you never wash an egg before storing it?
Although it sounds logical, washing an egg can be harmful.
The shell has a natural protective layer that prevents bacteria from entering. Because it’s porous, if you wash it, this protection disappears, and microorganisms can easily get in.
Best option:
Store them as they are, without washing them, and always in the refrigerator.
Also, avoid placing them in the refrigerator door: the constant opening and closing creates temperature and humidity changes, deteriorates the shell, and accelerates aging.
The danger of raw eggs
For years, consuming raw eggs or egg white shakes was popular for “gaining muscle mass.” But this causes two problems:
1. Reduced nutrient absorption
Raw eggs contain avidin, a protein that binds to biotin (vitamin B7), preventing its absorption. This vitamin is key for the nervous system, skin, and hair.
Furthermore, the digestion of raw protein is incomplete: only about 50% is absorbed.
When an egg is cooked, its protein unfolds, and the body can absorb up to 90%.
2. Risk of Salmonella
