Many of the impressive historical cultures had one divine food which they relied on to ensure tough mind, body, and spirit: Fermented fish/fish liver oil. The strong Roman Soldier was given a daily ration of fermented fish oil. The Stoic Scandinavian Viking had a drum of fermenting cod livers outside the door of his home. Grandma always had a bottle of cod liver oil in the back cupboard.wholesome assays, including vitamins an and D, for our fermented oils vary widely depending on methodology, lab and batch. actual science struggles to answer the questions we have on our divine fermented foods.There are many naturally occurring metabolites and co-factors that make the issue of measuring natural nutrients strenuous in the fermented oils. We do know that historical cultures liberally consumed these divine foods to impressive benefit without today’s standardization of knowledge.