Boil the egg for about 8 minutes, quench and peel. Clean, chop and wash iceberg lettuce and drain well. Wash the cucumber. Peel kohlrabi. Cut cucumber and kohlrabi into slices.
Peel the carrot and cut into sticks. Clean, wash and cut the peppers into pieces. Peel onion and garlic and chop finely. Mix yoghurt and sour cream. Stir in onion, garlic and dill, except for a little bit for sprinkling.
Season to taste with Sambal Oelek. Arrange iceberg lettuce, cucumber, paprika, kohlrabi and carrot on a plate. Quarter the egg, place it on the salad and sprinkle with pepper. Fill dip into a bowl, sprinkle with remaining dill and place in the middle of the plate.
Garnish raw vegetables with chervil. Serve with 1 slice of crispbread.