Preheat the oven to 350°F.

1. Separate the egg whites from the yolks.

2. Melt the chocolate in a double boiler.

3. Mix together the flour, baking powder, sugar, and salt, then add the egg yolks, melted butter, and chocolate.

4. Beat the egg whites until stiff peaks form and gently fold them into the first mixture. Pour into a greased mold.

5. Bake for 25 minutes. Remove from the mold and let cool on a wire rack.

6. Whip the cream and add vanilla sugar.

7. Cut the cake into thick slices. Top every other slice with whipped cream and decorate with raspberries.