Scientific name: Brassica rapa var. perviridis
Komatsuna is a kind of leafy green vegetable. It is also called Japanese mustard spinach or Asian greens. It looks like small, tender leaves and stems.People often use komatsuna in salads, soups, and stir-fry dishes. It is popular in Japan and is sold in many Asian markets. The leaves can be eaten raw or cooked, and they taste mild and slightly peppery.