Soak gelatine in cold water. Separate eggs. Stir egg yolks, sugar and vanilla sugar for about 5 minutes until creamy. Heat 5 tablespoons of wine. Squeeze the gelatine and dissolve in it. Add the rest of the wine and gradually stir everything into the egg mixture.
Chill for about 20 minutes until the mixture begins to gel.
Separately beat egg whites and cream until stiff. Fold the egg whites and half the cream into the wine mixture.
Layer the wine cream and remaining cream alternately in a large dessert bowl or six glasses. Chill for at least 4 hours. Before serving, use a peeler to remove shavings from the chocolate and decorate the cream with them.