Coriander seed obviously is the seed from the green plant that we use so prolifically these days. Lightly toasted in a dry pan before being added to pickles and chutneys really brings out the aromatics which, to me, are quite unlike the green leaves ( which I dislike intensely!) I use the seeds a lot in my pickles and they can, of course, be ground to a fine powder ina spice grinder to add to curries and the like. As an ingredient in Salted Lemons their fragrance combined with the lemon oil of the lemons is delicious and quite unique