fragrance. [ 1 ] Ajwain  oil, distilled from the leaves of  Bishop’s weed  ( Carum copticum ). Oil contains 35-65%  thymol . [ 2 ] Angelica   root oil , distilled from the  Angelica archangelica . [ 3 ] Anise oil , from the  Pimpinella anisum , rich odor of licorice,