Drain celery salad well in a sieve. Chop the walnuts. Wash the chives, shake dry and cut into fine rolls. Peel and finely chop the onion
Mix yoghurt, salad cream, onion, half chives and half walnuts. Season with salt, pepper and sugar
Peel, quarter and core the apple and grate it into the yoghurt sauce. Fold in celery. Spread the Waldorf salad on the slices of pork, roll up
Clean, wash and drain the green salad. Arrange the smoked pork rolls and garnish with the salad. Sprinkle with the remaining walnuts and chives
So they don't fall apart: Roll up the cured pork slices as tightly as possible and place them on the "seam