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) HerringHerring is often pickled, cold-smoked, or sold as a pre-cooked, canned snack.
This medium-sized fish is a popular breakfast food in some countries. In England, herring is served with
eggs and called kippers. Herring also contains vitamins B12 and D and almost 100% of the RDI for selenium. 3. 5 ounces (100 grams) of herring has 2,366 mg of omega-3s.