Every autumn, people in Pingding area begin to prepare for the winter every year. First, the green leaves of bean branches are collected, naturally dried in a ventilated place, and then cut into filaments. Then soak it thoroughly with boiling water, then cool it with cold water, put it into a big basket, press a big board on the dish, put stones on the board, and squeeze out the water from the bean leaves. Put the squeezed bean green leaves into the urn and tamp them, then press a big stone. Finally, add water and rice soup for retting. Pickled bean sprouts can be used not only for cooking, but also for making soup, and also have medicinal values such as reducing fire, quenching thirst and diminishing inflammation.