Cauliflower, a vegetable. It is a variety of cabbage and is closely related to broccoli. It is one of the few vegetables in which the flower is the part eaten. The white, thickened flower cluster is called the curd. When the first bit of white appears, the grower carefully gathers the outer leaves of the plant and ties them together, shielding the developing curd from the sun. The extra care needed in growing the plant makes cauliflower more expensive than most other vegetables. Cauliflower is usually eaten raw, boiled, or steamed.

Cauliflower is Brassica oleracea botrytis of the mustard family, Cruciferae.