Raspberry foam pie

Beat butter with powdered sugar, gradually add yolks, milk with dissolved soda, flour. Distribute the dough in a mold with a diameter of 28-30 cm, bake over a medium heat until light golden. Tip the finished cake onto a dish and let cool completely. Beat the whites with powdered sugar, add the mashed raspberries and whisk until thick and significantly expanded. Spread the cooled cake with raspberry cream.