When it comes to the problem of oysters rich in zinc, you have to talk about "raw oysters". Although many times and many places also call "oysters" as oysters, or strictly speaking, oysters are a type of oysters. However, in terms of zinc content, the difference between the two is quite striking: according to the "Chinese Food Composition Table" edited by Yang Yuexin (published by Peking University Medical Press in 2002), per 100g of oysters (code 12-4-109, excluding shell The weight of water, 87.1% water) contains 71.2mg of zinc, while the same weight of oysters (code 12-4-108, excluding the weight of the shell, water content of 82%) contains only 9.39mg of zinc, which is 7.6 times that of ordinary oysters. In terms of zinc content (especially considering its high water content), oysters are definitely the best, far ahead of other natural foods, and no one food can count on it.

　　 Therefore, the “highest” oysters with high zinc content in nutrition have always been referred to as “raw oysters” rather than ordinary oysters that can be bought everywhere on the streets of Dalian.

　　Oyster is also called oyster clam, oyster clam, oyster yellow, sea oyster, oyster and so on. There are many varieties of oysters living in different seas. The oysters in Dalian are "Dalian Bay Oysters", which are triangular in shape, with a dorsal and ventral edge in a figure of eight. The outer right shell is light yellow, with loose concentric scales, and the scales are undulating , White on the inside.

　　Oysters are a relatively large type of oyster species. A large one with a shell can be more than one kilogram in weight. It is generally grown or cultivated in the place where rivers and seas meet, in half The salty and shallow inner bay is shallow. Due to the limitation of suitable growth conditions, its quantity is less than other varieties, so its economic price is generally higher. ——This information is from the Internet. I didn’t implement it. If it is wrong, please check with your friends. I have eaten a large oyster in the hotel, which is much larger than the ordinary oysters bought on the street. It may be this oyster.

　　 I tried to search the pictures of "oyster" and "raw oyster" on the Internet and compared them. The results were fruitless. Most people mistake oysters for common oysters. What’s more, the pictures are almost impossible to distinguish or compare the size of “oysters”.