Clean and wash the chicory. Loosen the outer leaves and set aside. Cut the remaining chicory into strips. Clean, wash and slice the radishes. Dice cheese. Chop walnuts roughly.
Mix vinegar, salt and pepper and add oil. Mix the chicory strips, radishes, cheese and walnuts, pour the vinaigrette over them and leave to stand for about 15 minutes. In the meantime, peel the orange so that the white skin is completely removed.
Cut out the pulp between the parting skins with a sharp knife. Wash and quarter the apples, remove the core and cut the apples into thin slices. Sprinkle with lemon juice.
Arrange chicory leaves, apple slices and orange fillets on plates in a star shape. Spread the rest of the salad on top. Garnish with cress.