Choy Sum / Bunch

Choy sum (Chinese flowering cabbage) is characterised by yellow flowers
borne on slightly fleshy stems. The oval leaves have slightly serrated
margins and can be light or dark green. Unlike many other cabbages, it
never forms compact heads and it is more similar to bok choy. This
vegetable is a member of the brassica—or cabbage—family, also known as a
cruciferous vegetable.