Beat egg whites until frothy; ... edge. Blend in orange rind. Sift flour onto mixture ... 1/4 hours. Invert cake on rack and let stand ... then carefully remove doily.
Sift together flour, baking powder ... a time. Heat orange juice, rind and butter just ... greased 10-inch angel cake pan. Bake in a preheated ... and frost as desired.
Ingredients: 8 (eggs .. flour .. juice .. rind .. salt .. sugar ...)