Clean, wash and cut the soup greens into large pieces. Peel and quarter onions. Wash chicken wings and pat dry. Boil the vegetables, chicken wings, peppercorns and bay leaf in 1 litre of salted water and cook over a mild heat for about 1 hour.
In the meantime, whisk eggs and milk for the egg whisking stars. Season with salt and pour into a greased, ovenproof dish. Leave to set in a hot water bath for 20-30 minutes. Peel the carrots, clean and wash the leek.
Cut carrots into fine strips, leek into thin rings. Pour chicken stock through a sieve and bring to the boil again. Steam carrots and leek for about 5 minutes. Use a cookie cutter to cut out small stars from the egg and add them to the stock.
Season stock again with salt and pepper.