This recipe is great as a vegetable side dish and can be served warm, cold, or at room temperature. Bok choy is a bright green member of the cabbage family and is widely used in Asian cooking. It adds a nice flavor and crunch to any recipe. Bok choy is a good source of vitamins A, C, and K as well as folate and calcium. It is also rich in polyphenols – antioxidant phytochemicals.