Plum kelp tea and plum kelp tea are also called Dafu tea or Dafu tea. During the Chinese New Year in Japan, in order to pray for no illness or disaster, I drank the tea of dried kelp. Since the Edo era in Japan, the custom of drinking doctor's tea in New Year has been kept in Kansai areas such as Kyoto. Plum kelp tea has some phlegm, which is very beneficial to the thyroid gland.