Cook the pasta in plenty of salted water with the oil according to the instructions on the packet until al dente. Then drain and drain in a colander.
While the pasta is cooking, roughly grate the parmesan.
Put the cream in a saucepan and reduce by half. Whisk the egg yolks with 3 tablespoons of hot cream. Then add to the cream, do not let it boil anymore and stir until a slightly creamy sauce is formed, season with salt.
Layer the pasta with parmesan and cream sauce in a preheated bowl. Grate the truffle over the top, fold in well and serve immediately.