How to make
Beat the egg yolks with the sugar to whitening. Add the flour, melted butter, and finally the egg whites that have been whisked into snow.
Pour the mixture into a buttered baking dish and bake in a moderate oven.
Place the baked layer on a towel, smear it with jam, sprinkle with walnuts and cinnamon and roll it up.
Once cooled, sprinkle the roll with powdered sugar.
