Washing food usually makes it safer—but eggs are one notable exception.
Many people instinctively rinse eggs before cooking, believing it’s an extra layer of protection. In the United States and Canada, however, that well-intentioned habit can actually increase the risk of contamination rather than reduce it.
Here’s why.
Commercial eggs sold in these countries are washed and sanitized before they reach grocery stores. During that process, the egg’s natural protective coating, known as the cuticle or bloom, is removed. Once that barrier is gone, the shell becomes more vulnerable to bacteria if it is exposed to moisture, which is why these eggs must be refrigerated throughout the supply chain.
If you wash those eggs again at home—especially with cold water—you can unintentionally create conditions that allow bacteria on the shell to move through its tiny pores. Using water that is colder than the egg may increase this risk because the contents of the egg contract slightly, potentially drawing contaminants inward.
The safest approach for commercially produced eggs is also the simplest:
Leave them unwashed.
Store them in their original carton inside the refrigerator, where the packaging helps protect them from absorbing odors and reduces moisture loss. For the most consistent temperature, place the carton on an interior shelf rather than in the refrigerator door, which experiences frequent temperature changes every time it’s opened.
Farm-fresh eggs are a little different.
If they still have their natural bloom intact and are clean, many producers recommend leaving that protective coating undisturbed until you’re ready to use the eggs. If an egg is visibly dirty and needs cleaning, use water that is warmer than the egg, avoid soaking it, clean it gently, dry it immediately, and refrigerate it afterward if the protective bloom has been removed. Local food safety recommendations for home-produced eggs may vary, so it’s worth following guidance from your agricultural extension service or public health authority.
No matter where your eggs come from, a few basic habits help keep them safe:
- Refrigerate commercially washed eggs promptly.
- Discard cracked eggs, as damaged shells make contamination more likely.
- Wash your hands, utensils, and preparation surfaces after handling raw eggs.
- Cook eggs thoroughly when serving people at higher risk of foodborne illness, such as young children, older adults, pregnant people, or those with weakened immune systems.
Egg safety isn’t about doing the most.
It’s about doing the right things.
Sometimes the safest choice is resisting the urge to add one more step. Understanding how eggs are processed—and storing and handling them correctly—can do more to protect your family than an extra rinse ever could.
