Douban is commonly used in Sichuan cuisine. When did douban first come into use? Who can tell me this story?

During the Kangxi period of the Qing Dynasty (AD 1688), later generations inherited this idea and set up workshops in Pixian County to obtain raw materials and clean water from this area, thus producing a large number of watercress, which gradually became a climate, hence the name "Pixian watercress". Meanwhile, Yifenghe was founded in Xianfeng period of Qing Dynasty, Yuanfengyuan and Daoshengchang were founded in Guangxu period of Qing Dynasty. "One Wind Harmony" and "Yuanfengyuan" watercress have their own characteristics. After several times of development, the scale of two sauce gardens, "Yifenghe" and "Yuanfengyuan", has gradually formed, forming a tripartite confrontation in Pixian County. In the early years of the Republic of China, the production of watercress in Pixian county had reached a considerable scale, and it was exported to various places with the great smoke produced in Pixian county, from Chengdu to Chongqing along the Yangtze River to Hunan and Hubei, to Yibin in the south, to Ya 'an to Kangzang in the west, and to Guangyuan to Shaanxi and Gansu in the north. Foreign tobacco companies rushed to buy watercress to return home to give gifts to relatives and friends. Since then, Pixian watercress has gained a good reputation. In four years of the Republic of China, the Sichuan military government invaded Tibet. Prepare to order 30,000 to 40,000 Jin of "Pixian Douban" in two sauce gardens in Pixian County. When the goods arrived at the garrison, the sergeant went to get the lotus leaf oil paper and regarded it as bright as yesterday. They are delicious and won the praise of officers and men. The military government hereby awarded prizes and medals as encouragement, and "Pixian Douban" became famous.

Today, "Pixian watercress" has a history of more than 300 years, and great changes have taken place in the world. How many traditional cultural customs and famous local products have already drifted away in the wind, but "Pixian watercress" has continued to this day, which is the great fortune of Sichuanese. /view/244359.html