Put the whole chicken breast in the chicken stock for boiling and let it cook.
After the chicken is cooked, remove it from the stock and keep it aside.
Crush the sweet corn in a blender just a little bit so as not to make it a paste.
Add this sweet corn to the chicken stock and boil.
Cut the chicken breast into very small pieces and add it back to the stock.
Mix the corn flour in little water to make a smooth paste taking care that there are no lumps.
Add this to the chicken stock little by little stirring continuously. After this, the soup thickens.
Add the egg whites stirring continuously.
Serve hot with salt and pepper.