Ajwain is a close relative of dill, caraway and cumin and belongs to the same family. In India, its also called the bishop's weed, carom or ova and is particularly used in the delicate vegetarian fare from the state of Gujarat and Maharashtra. Ajwain seeds are tiny, oval and ridged. The greyish-green seeds are curved and look like miniature cumin seeds. The fragrance of the spice is very similar to that of cumin. Chewed on their own for their medicinal value, the seeds taste bitingly hot and bitter.