The origin of dried bean curd

At the end of the yuan dynasty, there were many heroes in the central plains, and wars continued. Later, Chen Youliang was defeated by Zhu Yuanzhang, and his strategist He (known as the mother louse fairy) lived in Puning area. He Ye Yun knows both science and geography. Once, when I was repairing the grave of the second grandparents of the Chen family in Guangnan, I felt the hospitality of my host family and wanted to repay it again. After the completion, He Ye Yun asked his master, "According to the geographical features of your hometown and the geomantic aura of your ancestral grave, the descendants of your hometown will be in droves in the future. I don't know if you want to be a thousand officials a day or a thousand officials a year? " Without thinking, the host casually replied, "Of course, a thousand officials a day are better." He Ye Yun BanZhi a calculate, know that this is a secret, sighed sadly. Therefore, according to the local resources and soil and water characteristics, he taught the villagers in Guangnan the technology of making dried bean curd ("dry" is homophonic with "official"), thus fulfilling the saying that "work at sunrise and rest at sunset".

The main raw materials of dried bean curd are soybean, potato flour, gypsum and brine. The technological process is: soaking beans, grinding, deslagging, boiling, powder testing, mixing gypsum powder, sprinkling salt water, wrapping, stamping, pressing off acid water, cooking and so on. Among them, the soaking time should be timely, otherwise it will affect the quality of dried beans; In soybean milk powder test, the stirring temperature of gypsum must be accurate, and different temperatures should be mastered according to different powders, otherwise it will destroy the whole; Salt water should also be sprayed in time; Water quality is the most important factor to determine the quality of dried tofu. Perhaps this is the mystery, that is, the scientific truth. Interestingly, after the authentic Guangnan dried bean curd is made, a small square seal is embedded in the middle of each dried bean curd, symbolizing the official seal.

After the successful production of dried bean curd, it has mushroomed in Guangnan and gradually spread to all parts of Puning. With the passage of time, it also spread from Puning to the whole Chaoshan, and even to many places in China and overseas.