The terms “bok choy” or “Pak Choy” tend to be confusing for gardeners (and cooks) because the plant is known by so many names, including Chinese cabbage, Chinese celery, Chinese mustard, spoon cabbage, and many others. Bok choy is a variety of Chinese white cabbage that falls into the cruciferous vegetable category along with kale, Brussels sprouts, and broccoli. NUTRIENT CONTENT : Bok choy contains a wide variety of vitamins and minerals. It’s particularly high in vitamins C and K. It also offers some fiber, an important nutrient for overall health.