It is rather a rule that in the manufacturing of earthenware, the special and correct mixure of the clay is needed.That is the plasticity of the clay to be mixed must be counted. Here in Dan Kwian, two type of clay are used the very plastic clay and the mild plastic clay.The ratio of 2:1 is applied. In the mixing, dirts and other crude substances must be removed. The clay then needs watering to keep it wet at the moderate ondition then must be kept in apond-size 1x1 metres wide and 20 centimetres deep for at least 24 hours.