Royal Sponge Cake
1 cup sugar
1/2 cup water
3 eggs
1 cup flour
1/2 teaspoon salt
2 teaspoons Royal Baking Powder
1 teaspoon vanilla or lemon extract
1/8 cup cold water
Boil sugar and water without stirring until syrup spins a thread and add slowly to beaten egg whites, beating until mixture is cold; sift together three times, flour, salt and baking powder; beat egg yolks until thick; add a little at a time, flour mixture and egg yolks, alternately to white of egg mixture; add cold water and flavoring; mix lightly. Bake in ungreased tin in moderate, oven about one hour.