Vienna Cake
["8 egg whites", "1/4 tsp. cream of tartar", "1/4 tsp. salt", "1 1/4 c. sugar", "8 beaten egg yolks", "1 c. cake flour", "1 tsp. vanilla"]
["Beat egg whites with cream of tartar and salt until very light. Gradually beat into this mixture the sugar and egg yolks.", "Fold in cake flour and vanilla.", "Bake in tube pan for 45 minutes at 350\u00b0. Remove from oven and turn tube pan upside down until cake is cool. Frost with Vienna Icing."]
["egg whites", "cream of tartar", "salt", "sugar", "egg yolks", "cake flour", "vanilla"]