Flaxseeds occur in two basic varieties: brown and yellow or golden (also known as golden linseeds).Most types have similar nutritional characteristics and equal numbers of short-chain omega-3 fatty acids. Flaxseeds produce a vegetable oil known as flaxseed oil or linseed oil, which is one of the oldest commercial oils. It is an edible oil obtained by expeller pressing, sometimes followed by solvent extraction. Solvent-processed flaxseed oil has been used for many centuries as a drying oil in painting and varnishing.
