Directions:

Sift flour and powdered sugar together four times.
Using an electric mixer beat egg whites and salt together until foamy.
Add cream of tarter and continue beating until soft peaks are formed.
Then add granulated sugar and continue beating until very glossy.
The batter should form stiff peaks when the beaters are removed.
Using a wire whip fold in sifted dry ingredients in one-thirds.
Do NOT preheat oven.
Bake cake in 10 inch tube pan for 35 minutes at 375 degrees.
(The 35 minutes includes the warm up time for the oven.
Allow cake to cool 3 hours before removing from the pan -- over- night if you can wait that long.