Similarly, food made from the necks of chickens, geese and other poultry is slightly toxic, for the same reason as duck neck.
Lymphatic fluid is an important part of animal body's defense against external bacteria and viruses, and it is also a sharp weapon to destroy invading "enemies". Lymph glands are cells that can destroy bacteria and viruses. It can achieve the purpose of defense by swallowing foreign invaders, but it will not excrete bacteria and viruses after swallowing, and will exist in animals for a long time.
Extended data
Duck neck is one of the traditional famous foods in Hunan, Hubei and Sichuan. Also known as sauce duck neck or sauce duck neck, it originated and spread in Changde, Dongting Lake area in Qing Dynasty, and spread to Sichuan and Hubei through Hunan, and became popular all over the country in recent years.
Duck neck belongs to sauce-flavored food (mainly duck neck and sauce duck, including sauce duck wing, sauce duck neck, sauce duck leg, sauce duck claw, sauce duck tongue, sauce beef, sauce fish, sauce qianzi, sauce lotus root, etc.). ). Sauced food is refined by soaking in various spices, then air-drying and baking. The finished product is dark red in color, fragrant, spicy, sweet and hemp.
reference data
Duck neck _ Baidu Encyclopedia