Coarsely chop the hazelnuts. Pour beetroot into a sieve and drain well. Dice herrings. Wash, peel and quarter the apple, cut out the core and dice the apple finely.
Peel onion and dice very finely. Finely dice beetroot. Wash chives, shake dry and cut into fine rolls. Drain capers in a sieve
Mix vinegar, sour cream and sour cream. Season to taste with salt, pepper and sugar. Add herrings, beetroot, apple, capers, onion, nuts, except some for garnishing and 3/4 of the chives. Season again with salt, pepper and sugar. Arrange sprinkled with nuts and chives