Put the folded breast into a saucepan of cold water just to cover. Skim it when it comes to the boil. Add the vegetables, herbs and seasoning. Cover closely and simmer gently for 3 hours. Lift and drain.
Place the veal flat on a large dish with the vegetables and pour a good parsley sauce (see below) over all. Place sippets of toast and quarters of lemon round the edge of the dish.