Mustard seed
Enjoy mustard seed
(Brassica nigra)
Enjoy mustard seed however use sparingly. This was used long ago in mustard plasters to help break a fever. There is a reported case of a young 15 month old child inhaling round cracked mustard seed containing the toxic compound, isothiocyanate. This can cause airway irritation and edema similar to black peppercorns (known to be lethal with aspiration). The child fully recovered.