1. Beat egg whites until foamy. Add sugar gradually until eggs are stiff.
2. Beat egg yolks until thickened. Fold into batter along with flavorings.
3. fold in flour and baking powder.
4. Pour into parchment and bake for 15 minutes at 350 degrees F
Pulp the oranges in a food processor.
Beat the eggs and gradually stir in all the remaining ingredients, including the orange pulp. Pour into the cake tin and cook for about an hour, until the cake is golden in colour and has risen.
Transfer to a wire cooling rack, keeping the cake in the tin. When the cake has cooled, carefully remove from the tin and serve cut into slices.