Yu choy (also edible rape or green chouk uyn jak sum) is a green leafy vegetable used in Chinese and South-east Asian cooking. It is mainly 0.4"-diameter green branching stems, with some dark green leaves and yellow flower heads. Yu choy is related to bok choy (leaves used) and broccoli (flower buds used). Yu choy is harvested as the plant bolts, which is when the low-growing plant suddenly shoots up stems to support flowers.
Yu choy is related to: