Hijiki

Hijiki is a type of brown or dull green seaweed growing on the coastlines of Japan, China, and Korea. Over time, it has become a staple seaweed used in numerous dishes due to its versatility. It dries quickly, yet maintains most of its nutrient content such as high amounts of dietary fiber, calcium, iron, magnesium, and vitamin K.

Hijiki is often used in stir-fries, soups, and fish dishes. It is believed that hijiki has been consumed since the Yayoi era, and it first appeared in print during the early Heian period in a publication called Tales of Ise.