Xianyou county has a long history of producing Polygonum flowers. As early as the Kangxi period of the Qing Dynasty, Polygonum multiflorum Thunb. It has become a must-have item for festivals and wedding gifts.
The basic raw materials of Polygonum cuspidatum are glutinous rice, sucrose, soda ash and maltose. The preparation method is as follows: firstly, the glutinous rice is soaked in water for 24 hours, then washed, dried and crushed, and then heated with water to make small soft strips. Stew the soft strips with water, add a small amount of soda ash, then put them in a metal bucket and stir them with a wooden stick until they foam and do not shrink. Then cut the small soft strips into 4 cm and 4 mm thick white strips, and fry them into Polygonum hydropiper. Polygonum hydropiper embryo wrapped by Polygonum hydropiper rice is the finished product of Polygonum hydropiper.