Gai lan, also known as Chinese broccoli or Chinese kale, is a leafy vegetable featuring thick, flat, blue-green leaves and a slightly bitter flavor. It has tender, juicy stalks and small, edible white flowers. Commonly used in Chinese cuisine, it is typically stir-fried, steamed, or boiled and often served with oyster sauce. Gai lan is rich in vitamins A and C, calcium, and dietary fiber.