Selling dog meat on sheep’s heads dates back to the Song Dynasty. Ordinary people in the Song Dynasty mainly ate pork. There were very dense pork shops in the markets of the Song Dynasty. It is said that no less than a hundred pigs were slaughtered every day in the Song Dynasty. , in addition to pork, the delicacy of the Song Dynasty was dog meat. In Water Margin, we also saw scenes of dog meat being eaten.

?At that time, the emperor of the Song Dynasty was Song Huizong, and Song Huizong was born in the year of dog. There was a person in the court who could flatter the emperor and made a suggestion to the emperor, saying that the emperor was born in the year of dog. Folks believed that the emperor was born in the year of dog. The common people killing dogs and eating dog meat are harmful to the emperor. For the sake of the emperor's dragon body, the people should be prohibited from killing dogs, selling dog meat, and eating dog meat. However, Song Huizong at the time believed this statement, because Song Huizong himself was He was very convinced, so he ordered that the slaughter of dogs was strictly prohibited, and shops were not allowed to sell dog meat. It was also stipulated that dog meat was not allowed to be eaten throughout the country. Because of this, in order to avoid inspection by the imperial government, shops did not dare to put up dog meat brands whenever they sold dog meat. Instead, they sold sheep's heads instead, so there was a saying of "selling dog meat with sheep's heads".

?The diet of people in the Song Dynasty is quite different from that of us today, because they usually eat wine as their main food, while pasta and rice are only supplementary foods for them. So we can think that since they eat wine as their main food, they will definitely not eat stir-fried dishes that are difficult to make, but eat some fast food, which is what we now call wine dishes, which are usually things that can be made in advance. Just cold dishes and some snacks. Because the preparation of dishes that require cooking, such as stir-fries, is too complex and takes a long time, it cannot be matched with the staple wine. Wine is something you can just pick up and drink. Of course, you won't deliberately wait for some hot dishes.

?We all know that people in the Song Dynasty were good at eating. People like Su Dongpo liked to eat pig's feet, and people like washing their hands to make soup. But they didn't eat stir-fried vegetables. Some relatively simple dried and fresh fruits or flour cakes can be paired with wine.