Is the egg's pore located at the big or small head

The pores of eggs are mainly distributed at the big end. The large head of an egg has more pores, while the small head has fewer pores, which is determined by the physiological structure of the egg and the developmental needs of the embryo.

There is an air chamber inside the large end of the egg, which gradually expands with prolonged storage time or changes in ambient temperature. The gas chamber exchanges gas with the outside through the pores on the eggshell, providing oxygen for embryonic development. The small end mainly serves as a support due to the denser structure of the eggshell and fewer pores. The pores of fresh eggs are not easy to observe with the naked eye, but can be identified through illumination or magnifying glass assistance. Eggs stored for a longer period of time will have more prominent pores due to water evaporation, especially in high-temperature and dry environments. If there are abnormal pores or cracks on the small head of the egg, it may be related to transportation damage or poor development of the eggshell. These eggs are susceptible to bacterial contamination and are recommended to be consumed with caution. When selecting eggs, you can gently shake them to determine the size of the air chamber. Fresh eggs have no shaking sensation when shaken.

Eggs should be stored with their heads facing upwards in daily life, which helps to maintain the stability of the air chamber and delay spoilage. Avoid exposing eggs to high temperatures or humid environments, and be careful to isolate them from other foods when storing them in refrigeration. If mold spots, abnormal odors, or cloudy contents are found on the surface of the eggshell, it should be discarded immediately. Reasonably utilizing the distribution characteristics of egg pores can better maintain their freshness and nutritional value.