There are many different varieties sold under many different names. Some varieties only grow about 6 inches (15 cm) tall. The better-known Bok Choy is a variety of Chinese White Cabbage.
Some of the outer leaves may be tough. Take the cabbage apart leaf by leaf, wash the leaves and drain.
Sliced thinly, the stalks can even be eaten raw.
Bok Choy, Swiss Chard,