At the end of the Northern Song Dynasty, there lived a Weng family by the Fei River. Weng's wife's man joined the army, leaving her and the old woman at home. Due to the turbulent situation, the field harvest is not good and life is very difficult. In order to take good care of the old woman, Weng's daughter-in-law often has to dig wild vegetables to satisfy her hunger. Seeing that life is so hard, Mrs. Weng thinks it is uncertain whether her son is dead or alive. She is over 20 years old and can't bear to drag her daughter-in-law down any longer. One day, Mrs. Weng called her daughter-in-law to her and kindly advised her to remarry and make another living. But Weng's daughter-in-law is a good wife and insists on it. But time flies, the sun and the moon fly, and Mrs. Weng gradually fell ill because of pity for her daughter-in-law. In order to serve Mrs. Weng, Weng's daughter-in-law tries her best to eat, drink and cook carefully every day. One day, in order to give Mrs Weng an appetite, her daughter-in-law had a whim. She put a little flour and sugar she got outside together, mixed them with water, made pancakes, fried them in a pot, and served them to Mrs. Weng after they were browned and crispy. Old lady Weng smelled the fragrance and had a big appetite. While tasting, she asked her daughter-in-law, "What is this?" In order to make Mrs. Weng happy, Mrs. Weng casually replied, "This is sesame cake." So, there is a "marijuana cake."

It is said that the old woman has tasted marijuana cakes, but she is worried about her son, so she specially saved some marijuana cakes in the jar: first, so that her son can taste marijuana cakes when he comes back, and second, to tell him that his daughter-in-law is very kind to him when he is away.

After some tossing, the nomads from the army was finally defeated by Yue Jiajun. One day, Liu Qi, the general of Yue Jiajun, led his troops through Mrs. Weng's house. Mrs. Weng was happy at the moment and asked her daughter-in-law to help take out her own marijuana cakes to comfort the soldiers who resisted gold. Because the sesame cake was crisp and sweet, the soldiers were full of praise after tasting it, and the name of the sesame cake spread from now on. Later, the folk pastry chef in Hefei improved the way and ingredients of baking cakes and made them into rectangular pancakes, which are the "sesame cakes" that have been passed down to this day.

"Hefei sesame cake" is also called "Cai Guogong cake", but even the old Hefei people are not familiar with this name.

This was more than 600 years ago in the late Yuan and early Ming Dynasties. At the end of the Yuan Dynasty, when Zhu Yuanzhang rebelled against the Yuan Dynasty, Zhang Desheng, a native of Hefei, recruited the children of his village to form sailors and defected to Zhu. When attacking yuxikou, Zhang Ren, a pioneer, went to Hefei to prepare dry food, made a big cake called hemp cake, rewarded the water army, boosted morale, defeated the Yuan army, and seized the natural barrier of Cai Shiji. Then win Taiping (Dangtu) Qing Ji (Nanjing). " Zhu Yuanzhang heard that Zhang Desheng won the battle with sesame cakes, so he named it "Victory Cake". Zhang later died in battle, and was posthumously named Cai Guogong by Zhu Yuanzhang (Biography of Ming History). Therefore, Hefei hemp cake was once honored as Cai Guogong cake.

Hefei hemp cake had a title in its early years, which was listed as the top grade and became the first of the four famous points in Hefei, and it has been passed down to this day. During the Guangxu period of the Qing Dynasty, Dongshan Liu, a senior official in Li Hongzhang's government, opened a shop in Houjie, Hefei, which is now Anqing Road, specializing in making sesame cakes. Incremental increase, pay attention to color, fragrance and shape, the epidermis is full of sesame seeds, and the thickness is uniform. Made of rock sugar, sweet-scented osmanthus, green shredded pork and sesame oil, it is well received by customers and has gained great reputation. In those days, Huaijun veterans of Feixi nationality gathered in tianjin railway station, and also brought the production of hemp cakes there. When Li Hongzhang, then governor of Zhili, knew about it, Dongshan Liu took the opportunity to put a packet of improved sesame cakes, labeled them with gold, and gave them to Li Hongzhang in 800 tubes. After Li Hongzhang tasted it, he thought that "the flavor is excellent, comparable to Suzhou's famous point." It was distributed to ministers and governors, and Liu's sesame cakes became famous all over the country.

Since then, there are four famous stores in Hefei, such as the century-old store in Zhang Shunxing and food factories such as Yongkang and Haohua, which produce Hefei sesame cakes and enjoy a high reputation for their sweet taste.