Transfer the cod liver to a plate and mash. Pour the oil from the can into a separate container. Rinse the rice under running water and then boil. Boil the eggs hard and grate on a coarse grater. Grate the pickled cucumbers coarsely. Wash the fresh herbs and chop finely.
In a separate deep bowl, combine two boiled eggs, cucumbers, cod liver, rice, herbs and mix everything well with a spoon. To taste, pour over the fish oil that was in the can.
Sprinkle the salad with salt and pepper to taste. Transfer the cod liver salad to a serving bowl and top with the remaining chopped egg. Before serving the salad, keep it covered in film in the refrigerator for 30 minutes.
Serve the salad on a large, attractive platter, or grab some serving plates and spoon a couple of spoons of fresh salad on top. Sprinkle with finely chopped herbs or small pieces of tomato if desired to brighten up the salad. Serve a couple of tartlets or crispy croutons next to the salad.