Herring With Onions

Preparation:

Preparation: A few hours before the picnic, put the fish fillets in boiling milk to drain. Cut the onions into rings and leave them to marinate in the vinegar. Rinse them in water, dry them well and season them with salt and oil. Throw away the milk and dry the fish. Season it with pepper, oil and lemon. Combine the herring and onions in a single container.