Heat the milk in a saucepan with butter, a pinch of salt and pepper and a pinch of nutmeg. When it reaches the boil, pour the semolina in rain, stirring with the whip. Cook over a low heat until the mixture thickens, then turn off the heat and add the egg yolk with grated Parmesan cheese, stirring with a wooden ladle.
Pour the dough on a sheet of oven paper and roll giving a cylindrical shape. Cool in the blast chiller for 15-20 minutes with blast chilling function. Then cut the cylinder into discs about 1 cm thick, place them on a baking sheet covered with oven paper, add over some sage leaves and a grated the roman goat cheese, Season with a drizzle of oil and gratin in the preheated oven to 180ºC for about twenty minutes.