Peel and finely chop the onion. Wash the chives, shake dry and cut into fine rolls. Mix vinegar, salt, pepper and sugar. Fold in the oil well. Stir in diced onion and chives
Clean and wash radishes. Peel and wash kohlrabi. Cut or slice both into very thin slices
Wash the salad, shake dry and arrange on plates. Arrange the vegetables in a rosette shape on top. Sprinkle with the marinade and leave to stand for a short time. Add one blob of sour cream each. Garnish with chervil leaves if desired.
A carpaccio is actually an Italian dish: In the original, raw beef fillet is cut into wafer-thin slices and sprinkled with olive oil and lemon juice