Boil eggs for 8-10 minutes until hard. Then rinse cold, peel and slice. Wash cucumbers and cut into fine slices. Wash rocket, pluck a little smaller. Pluck basil leaves from the stems.
Arrange the prepared ingredients on plates. For the marinade, clean and wash the radishes and cut into fine strips. Peel and finely dice the onion. Stir in vinegar. Season with salt, pepper and sugar.
Fold in the oil and drizzle onto the salad plates. Serve with ham.