Cook the pasta in boiling salted water for about 15 minutes. In the meantime for the sauce peel carrots, wash them and dice them very finely. Wash and quarter the tomatoes and remove the seeds. Cut the flesh into small cubes. Peel and chop onions and garlic. Wash the herbs and chop them, except for something to garnish. Melt the fat.
Sauté onions, garlic and carrots in it. Douse with white wine. Let it boil down for 2-3 minutes at high heat. Heat the stock and mascarpone. Season to taste with salt and pepper. Fold in herbs and tomato cubes, let it simmer a little bit. Serve pasta and sauce garnished with fresh herbs