Nozawana is a traditional leafy vegetable coming from the common turnip, but it’s also a type of mustard leaf. The dark green, long leaves are used for tsukemono – Japanese pickled dishes. The flavor of nozawana is mild and the texture is tender.
The leaves are usually pickled in a combination of soy sauce, vinegar, mirin, kombu, sugar, and chili. Alternatively, they can be stir-fried or steamed with various vegetables, but the leaves are usually pickled because they spoil quickly after they’ve been picked.