Mix the eggs and the sugar for roughly 5 minutes. This is best done with an electric mixer, and the mixture should roughly double in volume during the step.
Sift the flour, salt, and baking powder into the mixture, sifting is important so that no lumps form. Gently fold the flour, salt, and baking powder so that the mixture does not lose any volume.
Preheat the oven to 350℉ and pour the mixture into a spring form.
Once the oven is heated, bake for roughly 20 minutes.