Beat eggs with sugar until frothy. The crowd must have a good standing. Sieve the flour, cornstarch and baking powder and mix with the ground nuts. Carefully fold in the flour with a wooden mixing spoon (preferably with a hole).
Pour into a springform pan lined with paper. Bake at approx. 160 ° C for about 30-40 minutes, depending on the oven.
After baking, turn the base with the springform pan onto a wire rack and allow to cool.