It is a kind of preserved egg.

Supplement:

Preserved eggs, also known as preserved eggs, boiled eggs, etc., are egg processed foods invented by the Chinese Han people. They are a unique Chinese food with a special flavor and can promote appetite. According to "Yilin Zhuan Yao", it can "purge lung heat, sober up, remove large intestine fire, and treat diarrhea. It can be dispersed and agglomerated." It is commonly used to treat sore throat, pharyngeal therapy, hoarseness, and constipation.

Preserved eggs are not only a delicacy, but also have certain medicinal value. Wang Shixiong's "Suixiju Diet Manual" says: "Preserved eggs are pungent, astringent, sweet, and salty. They can purge heat, sober up, remove large intestine fire, treat diarrhea, and can be dispersed and astringent." Traditional Chinese medicine believes that preserved eggs are cool in nature. It can cure eye pain, toothache, high blood pressure, tinnitus, dizziness and other diseases. It can be eaten by everyone: people with strong fire are most suitable; children, those with insufficient spleen yang, diarrhea caused by cold and dampness, and patients with cardiovascular disease, liver and kidney disease should eat less.

Note: Preserved eggs should not be eaten with soft-shelled turtles, plums, or brown sugar. Usage and dosage: Eating preserved eggs should be combined with minced ginger and vinegar for detoxification; preserved eggs are best eaten after steaming. Preserved eggs also contain lead, so it is best for children to eat less. Not suitable for storage in the refrigerator.