What are the contents related to the history of chemistry in the Book of Qi Yaomin?

In this famous agricultural book, the contents related to chemical history are mainly concentrated in 7 to 9 volumes. These three volumes mainly introduce the processing of agricultural products at that time, and the content is very rich. Including brewing, fruit processing, vegetable preservation, cooking, cake bait, pasta, cakes, drinking syrup, boiling glue and so on. The study of chemical history is most concerned with a large number of records about the utilization of microorganisms. This part is essentially the essence of these three volumes. It can be said that the study of China's wine-making history and food history must study Qi Yao Min Shu.