Boil the eggs hard for 7-8 minutes after boiling. Drain the boiling water, add cold water, and when the eggs have cooled, peel them. Peel the onion, wash it, cut it into thin half rings and marinate in apple cider vinegar for 10 minutes. Peel the carrots, wash and cut into strips. Wash the lemon and dill for serving, cut a few lemon slices for garnish.
Prepare your ingredients. From 4 eggs, separate two yolks and grate the rest on a coarse grater. Grate the remaining yolks finely and set aside. Fry the carrots in sunflower oil until soft, about 7 minutes. Open the can of sardines and transfer the fish to a separate container. Mash the pulp with a fork until smooth.
Form a salad. Place grated eggs in the first layer into portioned bowls, then distribute the carrots, apply a mayonnaise mesh and lightly salt. Squeeze the onion and put it in the salad. Distribute the fish on top, brush the layer with mayonnaise. Finally, sprinkle the top of the salad with grated yolk.
Place a few lemon slices and a couple of dill sprigs in the center of the salad. Such minimal decoration will add brightness and flavor to the dish.