Cook the spaghetti `al dente` in salted boiling water. In the meantime, fry the bacon with the diced garlic cloves in a saucepan. Deglaze with the cream and creme fraiche. Add the grated Parmesan and the egg yolks and simmer until thick. Arrange the spaghetti on a plate, pour the sugo over it and sprinkle with the chopped parsley!