Overview
Kai-lan (also written gai-lan) is a leafy vegetable in the Brassica oleracea species, the same species that includes cabbage, broccoli, and kale. It is characterized by thick, flat, glossy blue-green leaves, thick stems, and small, nearly vestigial flower heads that resemble those of broccoli. The flavor is mildly bitter and earthy, more assertive than common broccoli but less pungent than kale.
Origin and history
Kai-lan is native to southern China and has been cultivated there for centuries. It belongs to the alboglabra group of Brassica oleracea, a classification that reflects its white flowers (from Latin albus, white, and glaber, smooth) [1]. The vegetable spread throughout Southeast Asia with Chinese diaspora communities and is now grown in many parts of the world, including the United States, Australia, and Europe. It is most commonly associated with Cantonese cuisine, where it is a staple green vegetable.
Varieties and aliases
- Chinese broccoli (common English name)
- Chinese kale (alternative English name)
- Gai-lan (alternative romanization from Cantonese)
- Jie lan (Mandarin name)
- Brassica oleracea var. alboglabra (botanical variety)
Culinary uses
Kai-lan is typically blanched, stir-fried, or steamed. In Cantonese restaurants, it is often served blanched with oyster sauce and a drizzle of sesame oil. The thick stems require slightly longer cooking than the leaves; many cooks split the stems lengthwise to ensure even cooking. It pairs well with garlic, ginger, soy sauce, and fermented bean pastes. The vegetable is also used in noodle dishes, such as wonton noodle soup, and appears in some dim sum preparations. The leaves and stems are both edible; the small flower buds are also consumed.
Cross-cuisine context
Kai-lan has no direct analogue in Mexican cuisine. The closest functional equivalent might be quelites (edible wild greens such as huauzontle or quintonil), which are also blanched or sautéed and served as a simple side. However, kai-lan’s thick stems and broccoli-like flower heads distinguish it texturally from most quelites. In other LA-relevant cuisines, kai-lan is comparable to rapini (broccoli rabe) in Italian cooking, which shares a similar bitterness and requires similar preparation. In Korean cuisine, kai-lan is sometimes used as a substitute for ssukgat (chrysanthemum greens) or other leafy greens in namul preparations, though it is not traditional.
Notes for cooks
- The stems take longer to cook than the leaves. Blanch stems first for 30 to 60 seconds before adding leaves, or split stems lengthwise.
- Look for firm, unblemished stems and leaves that are not wilted or yellowed. Smaller leaves tend to be more tender.
- Kai-lan can be stored in a plastic bag in the refrigerator for up to five days. Trim the stem ends and wrap in a damp paper towel before refrigerating.