Clean fish, remove heads and soak overnight in cold water.

Remove bones and skin and cut in halves lengthwise.

Slide knife or spatula under slices and place in a large serving dish.

Place sliced onions on top of fish.

Mix together vinegar, water, sugar, and allspice.

Heat until sugar is dissolved

Cool.

When cold, pour this over herring and onions.

Sprinkle top with black pepper.