After the pottery is finished by hand (formation of the soil plate), it is placed in the kiln and burned at 800 degrees, and then the two glazes are finished by glaze at a high temperature of 1230 degrees. * Using black clay as the bottom embryo, the characteristic of black soil after high temperature firing is that there will be a convex point on the surface in an unfixed position. This pottery cup just shows this feature on the bottom of the cup, only this one! *This cup is not big, the size is as shown in the photo, suitable for coffee or herbal tea~ * The thinner the hand-picked pottery is, the harder it is to make it. It is the hand-picked (soil-forming) thin pottery cup that is not easy to see on the market! Thickness: 0.3cm Empty cup weight: 148 grams The capacity is about 210ml, because the whole process is handmade, so it is not as perfect as a machine, so only one piece can be provided. This is also a special feature of Jingdou pottery. Please carefully check each photo for unacceptable details and then order it! * Use non-toxic glaze made in Taiwan, please feel free to use ~ Jingdou Tao: Any material that has undergone a hand-to-hand transformation has hidden factors beyond its control. A pair of hands trained by the brain always try to achieve the best change in every moment seen in front of the eyes. Such "best" sometimes reduces the harmony between nature and the body. In terms of pottery, the imperfect appearance will unexpectedly see a perfect sense of comfort, allowing natural materials to return to this natural imperfection.