The day before peel and wash carrots and potatoes. Cook the potatoes in boiling salted water for about 20 minutes. After about 10 minutes add the carrots and cook.
Rinse the herring fillet, dab dry and cut into small pieces. Peel and finely chop the onion. Roughly grate the beetroot. Drain potatoes and carrots and let them cool down.
Coarsely grate the potatoes. Arrange half as the lower layer on a large plate or platter. Spread half of it with mayonnaise. Spread the matie on top, sprinkle with diced onion.
Layer the remaining potatoes so that the matie and onions are completely covered with potatoes. Spread with the remaining mayonnaise. Grate the carrots coarsely and add them to the salad as the next layer.
Spread red prayers on the carrots. Covered layered lettuce and leave to stand overnight in the refrigerator.
The next day, boil the egg hard for 8-10 minutes. Quench, peel and chop. Distribute as the top layer on the salad. Wash herbs, shake dry and chop finely. Sprinkle over the salad and serve.