Norden’s Herring Fillet in Oil Rollmops with Onion is a yummy food treat that puts together the richness of herring and adds flavor from onions. Carefully made, these rollmops use tender herring fillets wrapped up and preserved in yummy oil. Adding onions makes the food taste good with a mix of saltiness and sweetness. The outcome is a tasty and delicious seafood meal that shows the heart of old European food. It’s great for those who like the mix of herring and onions in an easy-to-eat rollmop style.