This blue arrowhead (alismataceae) is one of the Noto vegetables, and is grown in the terraced fields in the Mikohara area (Mikohara-machi, Sugaike-machi and Sengoku-machi) at an altitude of 120~400m. It is shipped from early through late December. It was introduced as a crop for converting rice fields in 1980. It is elastic in texture and bitter in taste. It contains much Vitamin B1 and B2, potassium and iron. Its bitter components, tannin and catechin, are said to have an effect to prevent cancer and enhance immunity. It is prepared by boiling or frying. Its shape with sprout is considered auspicious, and it is often used as an ingredient in the special dishes of the New Year’s holidays.