Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      large         eggs
   3      large         egg yolks
     2/3  cup           sugar
     2/3  cup           cake flour
     1/3  cup           cornstarch

Preparation:

Preheat oven to 350F. Place eggs and yolks in the bowl of an electric mixer and beat by hand to break up. Beat in the sugar in a stream, and place the bowl over simmering water, beating by hand to warm the mixture. Beat the mixture by machine on high speed until cold and increased in volume. Sift the flour and cornstarch together several times and sift them over the egg mixture. Fold in by hand. Pour the batter into a buttered and paper-lined 9-inch Springform pan and bake for about 30 minutes. Remove from the pan immediately and cool on a rack.