Rotten goose web and rotten vegetables are the dietary customs in the south of the Yangtze River. When it has a long history of five generations, Qian Guang, a monk, said that "a goose in May has four palms" and that it was extremely addictive to this food. Cao Yin, Xueqin's grandfather, also likes this kind of food. His book "Avoid eating Xie Fangnan and fried chicken in winter and winter after taking medicine, there must be a trip to Jingjiang" has the saying that "a hundred addictions are not as good as a pair of foot soup", which is also the meaning. It seems that this is also Cao's dish. Bad geese use cooked paws, and the Song Health Department said, "Bad: cooked geese belong to the same genus as chicken paws, feet, wings, liver and lungs. The geese are all sealed, and they can stay for a long time, which is suitable for the winter moon. " When Baoyu ate goose's feet, it had been snowing outside for a long time, and it was just the right time to eat.

Bad duck letter, duck letter, that is, duck tongue Duck tongue as a dish is a dietary custom in Jiangnan. Rotten duck tongue was a famous dish in Yangzhou during the reign of Qing emperor Qianlong. Tong Yue recommended "Tong's Dietary Rules" and said: "Bad duck tongue, winter bamboo shoots wear bad duck tongue." Suzhou also cooks this dish. In the Book Collection of Yuan Dong in Qing Dynasty, he said, "He is not diligent in feasting and often takes pride in listing the treasures in the boat (that is, Tiger Hill). It goes without saying that there is no need to taste mountains and seas in the spring and autumn and summer. There are also many chickens, such as pipa duck tongue, stewed duck tongue palm, gourd duck tongue, rotten duck tongue and so on.