Mustard is one of the oldest known herbs and has been used for as long as history has been recorded. Yellow mustard is indigenous to southern Europe and western Asia and will produce spectacular fields of yellow or white flowers when in bloom.
Yellow mustard seeds develop flavour and pungency with time and have little or no smell, but they have a strong bite that is released when crushed and mixed with water. This activates an enzyme present in the seed, which in turn reacts to develop the essential oil which gives the characteristic taste. Mustard seeds are extensively used in meats, chutneys, processed vegetables and relishes.