San (Sá) soup, also known as "meat sauce", originated in Linyi, Shandong, and is popular in southern Shandong and northern Jiangsu. According to the Records of Yizhou, San was created by Linyi people. After several evolutions and improvements, it gradually formed a unique Yizhou famous food, which was named "San" in the Ming Dynasty. Pay attention to four points when drinking naan: hot, spicy, fragrant and fat. There are three kinds of dishes: beef, mutton and chicken. Among them, beef dishes and chicken dishes are the most authentic and common, and mutton dishes are the most precious. There are hundreds of restaurants in Linyi area, which are the daily breakfast of local people. In Shuo Yuan Zayan, there is a record that "quinoa soup is not delicious after seven days"; In the spring and autumn period, Mozi is not a Confucian, which says: "Confucius is poor in Cai Chen, and the soup is not delicious." "Book of Rites Neize" said: "Nao, take the meat of cattle and sheep, three for one, and cut it into small pieces. Mix with rice 2, meat 1 and fry. " The "three" mentioned here is quite similar to today's.