It is a common practice in Denmark and some other European countries not to refrigerate eggs, and there are a few reasons behind this cultural difference compared to practices in some other parts of the world, like the United States.
Different egg processing: In the United States, eggs are typically washed and sanitized before being sold in supermarkets. This washing process removes the outer protective layer of the eggshell, called the cuticle or bloom, which helps seal the shell and protect against bacterial contamination. Once the cuticle is removed, refrigeration becomes necessary to prevent the growth of harmful bacteria through the pores of the shell. In Denmark and many European countries, eggs are not washed before being sold, and the natural protective bloom is retained. This means that the eggs have a natural barrier against bacteria and can be stored at room temperature without significant risk of contamination.
Temperature and freshness: Denmark's climate is generally cooler compared to some other regions, which might also contribute to the practice of not refrigerating eggs. Room temperatures in Denmark are often lower than 68°F (20°C), the threshold at which eggs start to lose quality faster. In cooler environments, eggs can stay fresh for a more extended period at room temperature, making refrigeration less of a necessity.
Cultural norms and tradition: The practice of not refrigerating eggs has been passed down through generations in some European countries. It has become a cultural norm and is widely accepted as a safe and acceptable way to store eggs.
However, it's important to note that whether or not eggs need to be refrigerated depends on local practices, egg processing methods, and individual preferences. In regions where eggs are washed and the bloom is removed, refrigeration is recommended to ensure food safety. If you live in a country or region where the eggs are sold unwashed and you choose not to refrigerate them, it's essential to handle them properly, store them away from strong odors, and use them before their expiration date to maintain their quality and safety.