Boil egg in boiling water for about 10 minutes until hard. Clean and wash cucumber and paprika. Peel and wash carrots and kohlrabi. Cut cucumber, paprika and carrots into longish sticks, kohlrabi into slices. Wash and drain sprouts and crabs. Cut the gherkins into slices. Drain egg, chill and peel.
Cut in half and garnish each half with tomato paste, some cress, gherkins or a crab. Stir sour cream and yoghurt until smooth. Cut cress leaves from the stalks and stir into the cream. Season with salt, pepper and paprika. Arrange vegetables, egg halves and dip on a plate. Sprinkle with the remaining crabs and sprouts