If you do any type of Chinese cooking, at some point you’ll find yourself wanting bok choy. Cultivated in China since ancient times, bok choy is found in soups and stir-fries, appetizers and main dishes. Bok choy's popularity comes from its light, sweet flavor, crisp texture and nutritional value. Not only is bok choy high in Vitamin A, Vitamin C and calcium, but it is low in calories. Both the leaves and the stalks of bok choy can be cooked.