Pak Choi is a member of the cabbage family. If you like you can cut the leaves from the stems, as they cook at different speeds - the leaves cook much quicker, so you could add just towards the end of cooking. Alternatively, if you want to put leaves and stems in the pan at the same time, cut the stems into wide strips and the leaves into finer strips. Stir fry (2 minutes); steam (sliced 2-3 minutes; whole up to 8 minutes). Organic