Hijiki (ヒジキ, 鹿尾菜 or 羊栖菜, hijiki) is a brown sea vegetable growing wild on rocky coastlines around Japan, Korea, and China.

Hijiki has been a part of the Japanese diet for centuries. It is rich in dietary fibre and essential minerals such as calcium, iron, and magnesium. According to Japanese folklore, hijiki aids health and beauty, and thick, black, lustrous hair is connected to regular consumption of small amounts.Hijiki has been sold in United Kingdom natural products stores for 30 years and its culinary uses have been adopted in North America.

Due to its content of arsenic this is not to be consumed in large quantities.

‍