Every one knows wasabi, this green paste very hot eaten usually with sushi. Actually wasabi is a plant and the green paste is obtained from the stem, peeled and grated. In spring, the leaves of wasabi can be eaten. It's a delicate vibrant green leaf that is better slightly steamed or boiled and that accomodates very well rice and Japanese dishes.
I cooked it in a vegan version of a Japanese meal, with miso and sesame eggplants, pickled vegetables, rice with cereals and the wasabi leaves just steamed and served with ponzu.