DetailsLinseed oil is an edible oil obtained from the small, brown seeds of the linseed or flax plant. Linseed is mostly cold pressed when intended for use as an edible oil. This retains its typical properties, such as its spicy taste and high content in essential fatty acids, especially linoleic acid. Linseed oil can only be kept for a limited period. For this reason, the yellow-green oil should only be purchased in small amounts and used as soon as possible.