Gai lan is a leaf vegetable with thick, flat, glossy blue-green leaves with thick stems, and florets similar to (but much smaller than) broccoli. 

Gai lan is eaten widely in Chinese cuisine, common preparations include gai lan stir-fried with ginger and garlic, and boiled or steamed and served with oyster sauce. It is also common in Vietnamese, Burmese and Thai cuisine.

Gai lan, Chinese Kale