But certain habits—how we store them, cook them, or even test their freshness—can affect their nutritional value and increase the risk of bacterial contamination or inflammation.

With a few small changes, you can preserve their benefits and avoid unnecessary risks. Below are practical tips on freshness, safe storage, cooking, and even a quick recipe for safe homemade mayonnaise.

How to Check If an Egg Is Fresh

A simple water test can help determine freshness:

  1. Fill a glass with water.
  2. Gently place the egg inside.

If the egg sinks and lies flat at the bottom, it’s fresh.
If it floats, it has aged—use it soon or discard it.

This works because eggs lose moisture over time, allowing air to build up inside, making older eggs buoyant.

Why You Shouldn’t Wash Eggs Before Storing Them

Although washing seems hygienic, it actually removes a natural protective layer on the shell. Because the shell is porous, washing allows bacteria to enter more easily. The safest approach is to store eggs unwashed and refrigerated.

It’s also best to avoid placing them in the refrigerator door, where repeated temperature changes can weaken the shell and speed up spoilage.

The Risks of Eating Raw Eggs