First, boil the potatoes, carrots, beets, and egg. You can boil them all together or the beets separately, as they take a long time to cook (over an hour) and will color the water. Prick the vegetables with a knife occasionally to check for doneness.
After the vegetables and eggs are cooked, let them cool for 10 minutes. Then peel and grate them. It's best to grate the beets last, as they will stain the grater red.
First wash the apples, peel them and remove the seeds, then grate them.
Peel the onion and cut into small pieces.
Cut the herring fillet into small pieces.
Next, assemble the salad layer by layer. First, add the herring, then the onion. Next, add the grated potatoes, lightly salt, and spread with mayonnaise.
After the carrots, add a little salt and top with grated apples. Spread with mayonnaise.
Next, a layer of eggs, which are also salted.
The last layer consists of beets, which are also salted and coated with mayonnaise.