You will need
Enough pasta to feed 2 people- about 200g
3 tablespoons heavy cream
3 tablespoons parmesan cheese grated
a splash of truffle oil
1 tablespoon butter
salt and pepper to taste
1) Boil the pasta until al dente. Remove 1/4 cup of the cooking liquid and drain the pasta.
2) While the pasta is cooking whisk to combine the egg, cream, cheese, truffle oil and pepper.
3) Place the drained pasta back in the pot and add the butter and 1 tablespoon of the cooking liquid ,stir to allow the butter to melt through out the pasta.
4) Add the egg and cream mixture, stir to coat the pasta. Salt to taste.