These oily fish also have a long history as an important food fish, and are often salted, smoked, or pickled. Herring has been a staple food source since at least 3000 B.C. There are numerous ways the fish is served and many regional recipes: eaten raw, fermented, pickled, or cured by other techniques, such as being smoked as kippers.
Herring are very high in the long-chain Omega-3 fatty acids EPA and DHA. They are a source of vitamin D.