Egg storage is a widely debated topic, especially when it comes to whether or not eggs should be washed before refrigeration. While eggs naturally have a protective layer that helps prevent bacteria from entering the shell, some believe that washing them before storing them in the fridge can improve hygiene. However, others argue that washing removes this natural barrier, potentially making eggs more vulnerable to contamination.
Understanding the Risks of Washing Eggs
Eggs are known to carry invisible bacteria, including Salmonella, which can cause foodborne illnesses such as diarrhea. In some cases, eggshells may also have visible dirt or traces of chicken droppings. While it might seem logical to wash eggs to remove surface contaminants, research suggests that doing so can strip away the natural protective layer on the shell, leading to quicker spoilage.
Differing Global Practices in Egg Storage
Dr. Vu Thi Tan, a scientist known for her research in environmental protection and food safety, has examined this issue in depth. As a lecturer at Hanoi University of Science and Technology, she has explored different egg preservation practices across the world and found that approaches vary significantly between the United States and Europe.
In the United States, food safety regulations require that eggs be washed and sanitized before they are sold in stores. Because washing removes the natural protective coating, these eggs must be refrigerated to maintain freshness and prevent bacterial contamination. In many U.S. supermarkets, eggs are stored in refrigerated sections, with expiration dates extending up to 100 days from the time they were laid.
Meanwhile, in Europe—particularly in countries like the UK, France, and Germany—eggs are not washed before being sold. Instead, they are stored at room temperature, relying on the natural protective layer to prevent bacterial infiltration. European guidelines suggest that unwashed eggs have a shelf life of about 6–8 weeks when stored correctly outside the fridge.
Should You Wash Eggs Before Refrigerating Them?
Despite the prevailing recommendation to avoid washing eggs, Dr. Vu Thi Tan has conducted her own experiments on egg preservation and found that washing eggs before refrigeration can be effective if done properly. She suggests the following method:
- Start with fresh eggs – The fresher the eggs, the better they will hold up in storage.
- Soak eggs in a baking soda solution for 15 minutes – This helps remove dirt and bacteria without damaging the shell.
- Rinse eggs gently under tap water – Be careful not to scrub too hard, as this can weaken the shell.
- Allow eggs to dry completely – Drying is essential to prevent excess moisture, which can promote bacterial growth.
- Store eggs in a sealed container in the refrigerator – Keeping eggs in an airtight container helps prevent cross-contamination from other foods.
After testing this method, Dr. Vu Thi Tan found that eggs remained fresh for at least 35 days without spoiling. Based on her findings, she recommends that those who choose to wash their eggs should refrigerate them and consume them within one month for optimal freshness and safety.
The Best Practices for Storing Eggs
Whether or not to wash eggs before refrigeration depends on personal preference and local food safety regulations. In the U.S., since eggs are washed before sale, it is best to keep them refrigerated at all times. In contrast, in European countries where eggs are sold unwashed, storing them at room temperature is considered safe.
For those who prefer to wash eggs before storing them, following proper drying and refrigeration techniques can help maintain freshness. However, if eggs are unwashed and stored at room temperature, they should be kept in a cool, dry place and used within a few weeks.
Conclusion
Understanding the different approaches to egg preservation allows consumers to make informed decisions based on their local food safety standards and household needs. Whether you choose to wash and refrigerate your eggs or store them unwashed at room temperature, the key to maintaining their safety and freshness lies in proper handling. By following the right storage methods, you can ensure that your eggs remain safe to eat and free from harmful bacteria for as long as possible.
