Pickled mustard greens can be made into 'zhacai' preserved vegetables.
Tips
culture
Brassica juncea is the parent species behind several Chinese staples: 雪里红 (pickled greens), 榨菜 (the famous preserved-mustard side dish from Sichuan), and 大头菜 (root mustard). Pinyin can also be gàicài in some southern speech.