Peel, wash and roughly dice the potatoes. Cover and cook in salted water for about 15 minutes. Drain and let cool off.
Peel or clean and wash carrots and celery. Cut off 8 long sticks each, dice the rest finely. Peel and chop onion and garlic.
Dab the meat dry, halve it and beat it flatter. Season with salt and pepper. Cover each slice with 2 slices of pancetta. Place 1 carrot and 1 celery stick on each narrow end. Roll up and pin.
Heat 3 tablespoons of oil in a frying pan. Fry the rolls all around. Take out. Sauté onion, garlic and other vegetables in the frying fat. Add tomatoes and juice. Season with salt and pepper.
Bring to the boil, place rolls in the sauce, cover and stew for about 1 1/2 hours.
Heat 3 tablespoons of oil in a large frying pan. Fry the potatoes until crispy. Wash the rosemary, remove the needles and chop. Finally add and fry.
Wash and chop the parsley. Season to taste the tomato sauce. Serve the roulades with the sauce and the potatoes. Sprinkle with parsley.
Drink: dry red wine, for example Rosso del Lazio IGT La Petrosa from Cantine Conte Zandotti