
Prepare the ingredients. Check that the herring fillet is boneless. Cut the fish into small pieces. Cut the onion into half rings. Squeeze 1 tbsp of juice from the lemon and sprinkle it over the onion. Leave to marinate for 5 minutes. Peel the apple and remove the core. Pour water over the loaf and leave it to soak.

Mix the ingredients in a blender. Put the fish pieces, apple slices, pickled onions, soaked loaf, and vegetable oil into the blender. Grind everything using a blender. Grate the eggs on a fine grater. Add to the fish mixture and mix thoroughly. Season with salt and pepper. Put the dish in the refrigerator for 1 hour.