Passover Sponge Cake

Ingredients

 * 9 	 	eggs, separated
 * 1 3/4 	cup 	Sugar
 * 2/5 	cup 	potato starch
 * 1/4 	cup 	Cold water
 * 3/5 	cup 	cake flour
 * 1/2 		Orange-juice and rind
 * 1/2 		Lemon-juice and rind

Directions

 * 1) Separate eggs putting whites in mixing bowl and yolks in cold water.
 * 2) Beat whites by hand or electric mixer until stiff but not dry.
 * 3) Gradually add Sugar.
 * 4) Add yolks and water mixture and beat well.
 * 5) Add juices and rinds and beat well.
 * 6) Add cake flour and starch that have been mixed with very low mixer or by hand.
 * 7) Be sure that the flour mixture is thoroughly blended.
 * 8) Put in angel food cake pan and bake about 45 min. or until done in 350°F. oven.
 * 9) You can improvise by adding nuts, cinnamon-Sugar, or other things but the basic recipe is moist and tasty and wonderful especially as the base for fruits)