The leaves and stems will keep up to five days when loosely stored in a bag and kept in the crisper drawer of the refrigerator.

Bok choy is best suited for both raw and cooked applications such as steaming, boiling, grilling, braising, and sautéing. When used raw, the stalks and leaves can be shredded and mixed into slaws, or chopped and added to salads for a crunchy bite. Bok choy is most popularly utilized in cooked applications and can be sliced and incorporated into soups and stews or chopped into a filling for potstickers. The leaves and the stems can also be stir-fried or sautéed with other vegetables and meats to create a balanced main dish, and in Asian countries, the cooked greens are finished with sauces composed of oyster, soy, or hoisin sauce, sugar, garlic, and sesame oil. In addition to slicing and cooking, Bok choy can be halved and grilled for a charred flavor, pickled and fermented for a tangy flavor, or used as a substitute for napa cabbage in recipes. Bok choy pairs well with aromatics such as scallions, ginger, and garlic, meats such as poultry, beef, pork, and duck, tofu, lemongrass, sesame seeds, water chestnuts, bamboo shoots, carrots, mushrooms, and noodles.

Bok choy is an excellent source of vitamins A and C, which are antioxidants that can help protect the immune system and repair cell damage. It also contains vitamins B6, K, and E, magnesium, potassium, iron, manganese, and calcium.