Jelly Roll

Ingredients

 * 9 eggs, separated
 * 3/4 cup sugar
 * 1/2 cake meal
 * 1/4 cup potato starch
 * lemon juice
 * jam/filling

Steps
Beat egg whites until stiff. Ad sugar and beat until combined. Beat egg yolks with lemon juice and fold into egg white mixture. Put parchment paper into bottom of jelly roll pan ( cookie sheet with sides) and smooth in the batter. Bake at 350 until light golden brown. When done, put the pan, face down, onto a clean smooth towel. Peel off the parchment paper. Let cool. Smooth jam/filling onto the entire surface. Using the towel to begin, roll up from a narrow side, snuggly.