The selection machine which has the china and the selection manner which utilizes this

摘要

Disclosed are an extractor having a “ pottery with dark brown glaze” called “ Onggi” in Korean and a method of extracting using the same. The extractor includes a body, a body cover, a heating part and a pottery and a gas valve. The pottery is located within the body. The extractor extracts by injecting nitrogen gas and etc. into the body through a gas valve and thereby rendering the inside of the body to be high pressure state during extraction. Thus and the inside of the body is maintained under high pressure during extraction. Accordingly, an extract is located only within the pottery and thus changes that can be caused while an extract contacts with the body can be prevented.