Cumin is the seed of a small slender herb of the coriander family. This spice is used in the regional cookery of every part of India.Cumin seeds are elongated oval and sage-green to tobacco brown in colour and have longitudinal ridges. Cumin is suited to almost any cuisine in the world. It is used in North African dishes like couscous, Middle Eastern ones like kebabs, in Spanish stews and American pies. In India, most curries start off with a loud crackle as cumin seeds hit the hot oil.