Yingjing is the main producing area of sand ware, and the manufacturing method of sand ware is divided into several processes, such as picking, crushing, stirring, embryo making, drying, roasting, glazing and discharging. It basically follows the traditional manual workshop production mode left over from history, and has the characteristics of exquisiteness, uniqueness and non-repetition, and it is also a cultural relic. There is a rich yellow-white clay here, which is extremely delicate and sticky. Locals call it white mud, which is the main raw material of Yingjing black pottery casserole.
White clay is dried and ground, and then mixed with fine coal slag in a certain proportion, which becomes the world-famous "black sand". Yingjing black pottery casserole has no mold, and the master who makes clay blanks can also make blanks, decals and sculptures by personal touch in the darkroom. The kiln workers piled clay bricks on the kiln one by one, and then removed the huge kiln cover with iron brazing. Kiln workers make a fire at three or four o'clock every morning, and put the clay blank into the "steamed bread kiln" for firing.
Yingjing sand ware has a firing history of more than 2000 years, which is as famous as Yixing purple sand in Jiangsu. Yingjing Sand Pot is famous for its "Yingjing Casserole", which is a kind of clay and coal ash rich in the local area and fired at a high temperature above 1000℃. Yingjing Sandware has simple texture, corrosion resistance, acid and alkali resistance, no chemical reaction, no deterioration of stored food, and can keep the nutritional components and delicious food, so it is widely praised and enduring. In 2008, Yingjing Black Sand Handicraft was listed as a national intangible cultural heritage.