Double-yolk eggs refer to eggs with two yolks in one eggshell, and are usually much larger than ordinary eggs. When two egg cells mature at the same time and leave the follicle and enter the fallopian tube together, and each part of the fallopian tube is wrapped in protein, shell membrane and eggshell in turn, a double-yolk egg is formed. Sometimes multiple egg cells mature at the same time and merge into the fallopian tube together to become polyyolk eggs.

Similar to the formation of human fraternal twins, but fundamentally different. Fraternal twins are two eggs that are released and fertilized by a woman at the same time during ovulation, producing two different fertilized eggs that eventually develop into twins.

The egg cells in double-yolk eggs are not fertilized, so they cannot hatch. The yield of poultry with double yolk eggs is often related to the abundance of food and the health of the poultry. ?

Gaoyou duck:

Gaoyou duck lays many eggs, with large egg heads and a large yolk ratio. It is especially famous at home and abroad for its excellent double yolk eggs. The quality of eggs can be summarized as "fresh, thin, tender" albumen and "red, sandy, oily" egg yolk. In Wang Zengqi's "Hometown Cuisine", there is a narrative with pictures and texts: "I really don't like the salted duck eggs from other villages."

The characteristic of Gaoyou salted eggs is their quality. Excellent, rich in fat. The egg white is soft, unlike the dry powder found elsewhere, and tastes like chewing lime. Oil is much worse than elsewhere. It is usually eaten and eaten with chopsticks. The tip of the chopstick squeaked red when pierced.

High-quality water resources are everywhere in Hegougang tributaries, lakes and beaches, which are the natural breeding grounds for Gaoyou ducks. Various small animals floating on the water and living underwater provide the most delicious "live food" for Gaoyou ducks.

This also provides unique natural conditions for the development of ecological duck breeding and the development of green products in recent years. In recent years, a number of high-quality brands such as Red Sun, Sanhu, and Friends and Family have obtained famous names, well-known trademarks, and green food labels.