LEFKS (Poireaux), when about the thickness of giant asparagus can be tied in bundles, and cooked in a similar manner, being served with a white sauce or butter plainly melted; but these excellent members of the onion family are chiefly of value to the cook for the flavouring of broths and soups. In the form of purée with a dusting of grated cheese they make a good savoury toast.