Kombu is the body of a marine plant, purple in color, generally 12 to 30 cm high.It is distributed along the coasts of Liao Ning Peninsula, Shang Dong Peninsula, Zhe Jiang, and Fu Jian.Also produced in Korea and Japan.Kombu belongs to red algae, growing on shallow sea rock reefs, with colors ranging from reddish purple, greenish purple to bluish purple. After drying, they are all purple in color, hence the name Kombu.It is the leaf-like body of the plant Palmaria palmata.There are records of its consumption in China since before the Han Dynasty, it has always been regarded as one of the precious marine delicacies, with an extremely fresh flavor, and loved by people.Although kombu is produced along the coast, after drying, it can be stored for a long time and transported over long distances. People in all regions can purchase it at any time.The quality is best when thin, smooth surfaced, glossy, clean without impurities, with a moisture content of less than 9%.
