Clean and chop the aubergines in thin slices. Soak them in salted water for half an hour and then remove from water and drain them. Cut the sausages and the long peppers in thin round slices. Cut the round peppers in rectangles. Peel the potatoes and cut them in thin round slices.
Fry the peppers and the sausages in corn oil. Fry the aubergines separately. Drain them using and absorbing sheet. Grate the tomato and mix it with the sugar, some salt and pepper.
Boil the potatoes in the veal stock and drain them. Mix the tomato, the aubergines, the peppers and the sausages with the potatoes the rosemary and the parsley. Add salt and pepper as much as desired.
Cut the aluminium foil in even square pieces. Add in the middle of each aluminium sheet a portion of the mixture and fold the aluminium foil as a parcel. Bake in medium temperature for 50 minutes and serve hot.
