Chocolate Angel Food Cake - cooking recipe

Ingredients

1 c. sifted cake flour
1/4 c. cocoa
1/2 c. sugar
1 1/2 c. egg whites (room temperature)
1 1/4 tsp. cream of tartar
1/4 tsp. salt
1 tsp. vanilla
1 1/3 c. sugar, sifted

Preparation

Sift together flour, cocoa and 1/2 cup sugar 5 times.
Put egg whites in large bowl of mixer.
Add salt.
Beat on high No. 10 until foamy 1/2 minute.
Add cream of tartar.
Beat on high until whites are stiff and stand in points, 2 1/2 to 3 minutes.
Sprinkle in rapidly 1 1/3 cups sugar.
Beat on No. 8 about 1 minute.
Turn to No. 2 speed and add vanilla.
Fold in flour mixture, folding in by hand with whip in 4 additions turning bowl often.
Up and over motion about 15 times.
Put in pan; carefully cut through batter with a knife or spatula, going around in circular motion 6 times to release large air bubbles.
Bake in ungreased 10-inch tube pan at 375\u00b0 for 35 to 40 minutes.
Cool upside down.