Post #13835

Cod liver oil is a type of fish oil used today for general health purposes, but northern European fishing communities used cod liver for centuries before the doctors and chemists of 19th-century Europe began to take an interest. Its manufacture was simple: the livers of the codfish were left for some days, then oil was taken from them. The oil grew darker according to how long the livers were left, resulting in three grades of oil: pale, light brown and dark brown.