Cook the pasta in salted boiling water.
Cut the half cooked whole duck liver into 8 pieces, then cut the pieces into halfs.
Reserve 6 of them to decorate the dish at the end.
In a pan, mix the crème fraîche with the nutmeg, the duck liver pieces, the salt and the freshly grated black pepper, and simmer for 5 minutes.
Add the pasta to the sauce and stir from time to time during 1 minute.
Use then the 6 pieces of duck liver and the baies roses to decorate your dish.