Clean, wash and drain the soup greens. Finely grate carrots, celery and parsley root. Cut leek into VERY fine rings. Remove 2-3 tablespoons of leek and set aside.
Mix the remaining vegetables. Stir the eggs briefly and mix into the vegetables together with the flour. Season with salt and pepper. Cut salmon fillet into fine cubes. Mix vinegar, mustard, honey, some salt and pepper.
Add 2 tablespoons of oil. Mix salmon and leek with the vinaigrette. Heat 5 tablespoons of oil in portions in a large coated pan. Fry 12 small buffers one after the other for 4-5 minutes while turning them until crispy brown.
Drain the finished buffers briefly on kitchen paper and keep warm. Arrange buffers on plates and garnish with parsley. Serve with salmon tartare and sour cream.