Beat the eggs, add the sugar and cornflour. Continue beating until the sugar has dissolved. Heat the cream with the pierced vanilla pod until it reaches boiling point. Pour onto the egg mixture, whisking continuously. Strain into the flan case and sprinkle with the grated nutmeg.
Bake in a cool oven at gas mark 2, 300°F (150°C) until the custard is set, about 30 minutes. A skewer insert