The Float Test: A Simple and Revealing Method

Imagine yourself holding a bowl filled with water and an egg in your hand. When you gently place the egg into the water, what do you observe?
If the egg sinks all the way to the bottom, this is a clear indication that it is fresh.
If the egg floats or tilts slightly upward, this suggests that it is older, although not necessarily unsafe to eat.
Why does this happen? Over time, an air pocket forms inside the egg, making it lighter. This is a fascinating natural phenomenon! However, exercise caution: an egg that sinks is not automatically safe to consume. It is always wise to check other factors before eating it.
The Smell Test: Your Nose, a Trusted Ally
Your sense of smell is a valuable tool for detecting the freshness of an egg. Break the egg into a bowl and take note of its scent. Is there an unpleasant, strong, or unusual odor? Don’t hesitate—discard the egg immediately! The smell of a spoiled egg is very distinctive and unmistakable. Making a habit of performing this test is especially helpful, particularly when the expiration date has passed.
The Use-By Date: A Guide Not to Follow Blindly

On every egg carton, a recommended consumption date (often called the best before date) is printed, usually set at 28 days after laying. Once this date has passed, don’t panic: provided you store your eggs in the refrigerator, they can remain edible for several additional weeks.
Our advice? Combine this date guideline with other methods such as the float test or a careful visual inspection to avoid unnecessary waste.
Visual Inspection: A Simple Yet Telling Examination
Before cracking an egg, take a moment to examine it carefully:
- A cracked, sticky, or powdery shell is a sign of spoilage and should raise suspicion.
- If, upon opening the egg, you notice pink or black spots, it indicates bacterial contamination, making the egg unsafe and best discarded.
- A very runny egg white or dull yolk does not always guarantee freshness, but the egg may still be edible if there is no unusual smell.
The Candling Technique: A Detective Method to Gauge Freshness
For the curious or the meticulous, why not try candling? In a dark room, shine a flashlight through the egg’s interior. If the air cell is tiny and the white and yolk sections appear firm, you are holding a fresh egg. Although this method requires some practice, it provides a fun and precise way to verify egg quality.

In Summary
Determining an egg’s freshness should not rely on a single test alone. For a reliable assessment, it is recommended to combine several techniques to avoid unnecessary waste. These tips will allow you to cook with confidence and fully enjoy your eggs.