Almost everyone has been faced with this conundrum — you reach into the fridge for an egg, but can’t remember how long they have been sitting there.

It’s true that over time, an egg’s quality begins to decline as the air pocket inside gets larger and the whites get thinner. However, an egg only “goes bad” when it starts to decompose because of bacteria or mold.

In fact, your eggs may be perfectly good to eat for many more weeks.

When in doubt, this is the quickest way to determine if your eggs are good or bad.

The Float Test!

The float test is one of the most popular methods for checking whether an egg is good or bad.

This is also a common method for determining the age of a fertilized egg that is developing into a chick (5, 6).

It works just as well to judge whether an unfertilized table egg is fresh or not.

To perform the float test, gently set your egg into a bowl or bucket of water. If the egg sinks, it is fresh. If it tilts upwards or even floats, it is old.

This is because as an egg ages, the small air pocket inside it grows larger as water is released and replaced by air. If the air pocket becomes large enough, the egg may float.

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