Ajwain seed is usually referred to as a Bishop's seed, Celery Seed is a plant of India and near-east countries whose seeds are used as a spice. Ajwain seeds have similarities to parsley. Ajwain seeds originated in the middle east and Indian subcontinent. In India major producing states of Ajwain seeds are Gujarat and Rajasthan. Ajwain seed has a bitter and pungent taste.