Herring fillets are made with Atlantic herring that's been lightly salted and preserved in oil.
Atlantic Herring Fillet Skinless 67% (Herring Fillet), Salt, Dextrose, Acidity Regulator Glucono-Delta-Lactone, Taste Enhancer, Preservatives Sodium Benzoate, Potassium Sorbate, Rapeseed Oil 33%.