Ceramic extraction is designed based on the traditional Korean decocting container, comprised of a ceramic container. The ancient Korean sages tried not to use any metallic utensils while making medicine with medicinal herbs.

In DonguiBogam*, it is written that when you prepare a medicine by decoction, avoid using metallic containers such as iron, copper, and steel because the metals destroy the beneficial compounds of medicine. Also, several studies revealed that total polyphenol contents decrease during the extraction with irons present. The ceramic container also maintains the temperature well.

*DonguiBogam is also known as an Exemplar of Korean medicine published by the royal physician Heo Jun in Korea's Joseon Dynasty.