Cumin is a spice that comes from the Cuminum cyminum plant. It is native to Asia, Africa, and Europe, but it is widely used in cooking throughout the world. It is the second most popular spice after black pepper.Cumin is usually purchased in the form of whole dried seeds or as ground powder. It is a typical ingredient in many spice blends, such as curry powder. Cumin is a staple spice in many cuisines, especially Mexican, Indian, African, and Asian.