Palachinke(Filled Pancakes)  
["1 1/4 c. cake flour", "1 1/4 tsp. baking powder", "1/2 tsp. salt", "1 tsp. sugar", "1 c. milk", "2 egg yolks, beaten", "2 Tbsp. melted butter", "2 egg whites, stiffly beaten"]
["Sift flour, measure and add baking powder, salt and sugar; sift once", "more.", "Add milk to egg yolks.", "Add flour mixture gradually; mix to smooth batter.", "Add butter. Fold in egg whites. Bake on hot, greased griddle."]
["cake flour", "baking powder", "salt", "sugar", "milk", "egg yolks", "butter", "egg whites"]