Stir the sour cream, mayonaisse, and black pepper together.
Layer the fish and vegetable ingredients in a deep dish with a few spoonfuls of the cream and mayonaisse mixture between each layer. It is recommended that you keep the layers in the following order: herring (retain a few pieces for garnishing), onion, potato, carrot, beet root.
Garnish with chopped egg and herring pieces. Chill and serve.