Cook the Vegetables: - Boil the potatoes, carrots, and beets in separate pots until tender. Let them cool completely, then peel.
Saute the diced Onions: Dice a small onion and saute in a frying pan with butter until golden brown. Mix the sauteed onions together with the grated potatoes to give extra flavor.
Boil the Eggs: - Place eggs in boiling water and cook for about 9-10 minutes. Cool, peel and chop into cubes.
Make the Mayonnaise mixture: - Mix mayonnaise with sour cream. Add salt and pepper to taste.
Prepare the Ingredients: - Grate the potatoes, carrots, and beets separately using a coarse grater. Drain the herring from the glass jar and pat dry completely.
Layer the Salad: - Stir in mayonnaise mixture into each separate bowl of grated vegetables. Eggs, potatoes, carrots, and beets. It should be nice and creamy. Start assembling the salad by placing the drained herring into a deep serving dish. Then add the potato and diced onion. Add the carrots mixture, then the egg mixture and lastly the red beet mixture.
Chill: - Cover the salad and refrigerate for at least 4 hours, preferably overnight. This allows the layers to absorb the flavors.