Preheat the oven to 180 °C (350 °F). In a bowl, beat the egg whites with an electric mixer on medium speed until soft peaks form. Add 60 ml (1/4 cup) of the sugar. Continue to beat until stiff peaks form. Set the meringue aside. In another bowl, beat the egg yolks with the remaining sugar and the vanilla for 3 minutes. With a spatula, gently fold into the meringue, alternating with the sifted flour. Place the batter in a pastry bag and make 7.5-cm (3-inch) long by 2.5-cm (1-inch) wide cookies on a buttered and floured baking sheet. Leave 2.5-cm (1-inch) space between each cookie. Place on the rack in the middle position of the oven and bake for 15 minutes. Detach from the baking sheet. Cool on a wire rack. Make sure you have fifty cookies.
White Chocolate Mousse
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