1/4 cup cocoa
powder plus additional for baking pan 1/4 cup cake flour 3/4 cup
granulated sugar 4 eggs, separated Pinch of salt 1/2 teaspoon cream of
tartar 1/2 teaspoon vanilla extract 2 cups whipped (not frozen) Vanilla Ice Cream
Mix Confectioners sugar
Preheat oven to 400 degrees F. Grease or
spray 10 x 14 inch baking sheet with vegetable pan spray; sprinkle well with
cocoa. Sift together the 1/4 cup cocoan and flour. Add granulated sugar to
mixture and sift again; set aside.
In large bowl, beat egg yolks with
mixer until light and fluffy, about 3 minutes. In separate bowl, combine egg
whites and salt. Beat with electric mixer until whites begin to foam; add cream
of tartar and continue to beat until the white are stiff but still moist. Fold
one-third white mixture into yolk mixture just until blended; spoon yolks over
remaining whites. Spoon flour mixture over egg yolks; gently fold together just
until there are no streaks of egg white or flour. Spread into prepared pan. Bake
10 to 12 minutes or until toothpick inserted in center comes out
clean.
Remove cake from oven and immediately turn out onto clean kitchen
towel; trim away crisp edges. Roll cake up in the towel from long side and let
rest for 1 minute. Unroll and let rest 5 minutes. Re-roll in towel and let cool
completely.
Unroll cooled cake and spread with shipped ice cream. Reroll
and freeze until firm, 6 hours or overnight. Just before serving, sprinkle with
confections sugar.