A light lemon sponge cake, suitable for Passover. A good use for that leftover matzo meal too.
1 Beat whites until stiff. Beat in confectioners’ sugar. Beat together yolks and lemon juice: fold yolk mixture into egg whites. Fold in potato flour and matzo meal. Pour batter into ungreased tube pan.
2 Bake at 375 degrees F (190 degrees C) for approximately 1 hour.