Gaoyou duck lays more eggs, with large egg heads and a large proportion of yolk, especially for producing double yellow eggs. Its egg quality can be summarized by protein's "fresh, thin and tender" and yolk "red, sand and oil". In Wang Zengqi's Hometown Cuisine, there is a vivid description: "In the past, it was difficult for the sea to water, and salted duck eggs in other places were really disdainful." Gaoyou salted eggs are characterized by good quality and rich oil. Protein is very tender, unlike other places where the hair is dry and pink, and the mouth is like chewing lime. There is more oil here than anywhere else. Usually, when eating, we usually break the "short" and dig with chopsticks to eat. When the chopstick head is dropped, the cheap red oil comes out.

Rivers, harbors, lakes and beaches are ubiquitous high-quality water resources and natural breeding grounds for Gaoyou ducks. All kinds of small animals floating on the water and living underwater provide Gaoyou duck with the most delicious "live food". This also provides a unique natural condition for the development of ecological duck breeding and green products in recent years. In recent years, a number of high-quality brands such as Red Sun, Sanhu and Qinyou have been developed and won well-known trademarks, well-known trademarks and green food marks.