Mizuna and mibuna are very popular Japanese leafy vegetables with the
scientific name, Brassica rapa var. nipposinica or var. japonica. Mizuna
grows as a giant rosette of finely dissected, feathery leaves, which are dark,
glossy green. This rosette can grow to 23 cm high and can spread to 45 cm.
Mibuna is thought to be closely related to mizuna except that its leaves tend
to be longer and narrower having rounded tips.
The flavor is mild and sweet for fresh winter salads, with a mild mustard taste.