Eggs are a kitchen staple and an excellent source of protein, but they also come with a hidden risk: salmonella contamination. While most of us know the importance of cooking eggs properly to avoid this risk, there’s a common mistake many of us make that could be promoting the growth of harmful bacteria. Let’s explore this mistake and how you can avoid it.
The Popular “Float Test” Could Be Putting You at Risk
One of the most common ways we check the freshness of an egg is by placing it in a glass of water. The idea is simple: if the egg floats, it’s old, and if it sinks, it’s fresh. While this method has some basis in fact (the air pocket inside the egg grows as it ages, causing the egg to float more), it also carries an unintended consequence: it could increase the risk of bacteria contamination.
Dr. Océane Sorel, a virologist and immunologist, recently shared an eye-opening video on her Instagram (@thefrenchvirologist), explaining why this seemingly innocent act could be problematic. According to Dr. Sorel, eggs have a protective cuticle—a natural coating on the eggshell that prevents bacteria from entering the egg. When you immerse an egg in water, you remove this cuticle, making it easier for bacteria, including salmonella, to penetrate the shell.
The Risk of Salmonella Contamination
Salmonella is a bacteria that can be present in both eggs and the chickens that lay them. While it’s commonly found on the surface of the eggshell, the presence of the cuticle helps prevent it from getting inside. Dr. Sorel points out that when the cuticle is removed, either through washing or testing an egg in water, bacteria can enter the egg more easily. This makes it even more important to cook the egg thoroughly to kill any bacteria that may have gotten inside.
Even if you’re not washing the egg, simply wetting it during the freshness test can cause bacteria to slip through the shell. Dr. Sorel’s advice is clear: avoid consuming eggs raw or lightly cooked, and always ensure they’re fully cooked to reduce the risk of bacterial contamination.
How to Handle Eggs Safely
It’s easy to assume that small tasks like the float test or gently washing eggs won’t have much of an impact, but as Dr. Sorel highlights, these habits can unintentionally create conditions that foster bacteria growth. The key takeaway? Always store your eggs carefully, and be mindful of how you handle them. If you’re concerned about freshness, try to check the sell-by date or simply trust your senses by inspecting the egg for any cracks or unusual smells instead of dipping it in water.
By taking these simple precautions, you can avoid common mistakes and enjoy eggs safely without worrying about hidden bacteria.
Naturally curious, Jules Nova is a blogger who writes from the heart. He enjoys diving into topics that challenge, inspire wonder, or provoke thought. His writing blends personal insights, culture, life tips, and gentle poetic touches.
