Pomeranian salted herring in sweet and sour flooding

Gut herring and wash it. Soak and cut into the ring. Prepare the flooding made from vinegar. Place herring in a dish, put the chopped onion. Pour cold flooding on herring. Marinate for at least 15 hours.
Ingredients:
salted herring
onion
grained pepper
bay leaf
vinegar
sugar
salt