Plum essence is an alkaline, healthy and pure natural food which is repeatedly concentrated from plum juice according to ancient prescriptions. Plum extract is rich in plum essence, citric acid, amino acids, calcium, phosphorus, iron, sodium, manganese and other minerals needed by human body. Regular drinking can promote health, so it is also called "the king of alkaline food".

Plum essence is very popular in Japan and is a traditional health food in Japan. During the Meiji Restoration, it was a sacred object of the royal family. In 1970s, karoshi became more and more serious in Japan. Plum essence began to enter the middle class and some ordinary families and became a necessary drink for families. Plum essence has been circulated in Japan for more than 100 years, and is deeply loved by middle-aged and elderly people, and is honored as a "sacred product for health preservation".

At home, the commercial development of plum essence has yet to be developed, especially the deep processing of the raw material of plum essence.