For the sour cream and herring salad, cut the herring into small pieces, finely dice the apple and onion, put everything together in a bowl, add the sour cream and mayonnaise, season with dill, salt and pepper and mix well.
Leave to stand for some time. Peel hard-boiled eggs, cut them into quarters and garnish the herring salad with them. Cut peppers into strips and place around the salad.