Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   6                    eggs -- separated
     1/2  cup           granulated sugar
   1      tablespoon    lemon juice
   1      tablespoon    orange juice
   2      teaspoons     rum extract
   1      cup           cake flour
   1      pinch         salt
                        confectioner's sugar

Preparation:

Preheat oven to 350F. Beat egg yolks until thick. Beat in sugar, lemon and orange juice and rum extract. Sift flour twice and add gradually to egg yolk mixture. Beat egg whites until foamy. Add salt and beat until stiff. Fold into egg yolk mixture. Pour batter into pan. Bake for 1 hour. Cool cake in pan, invert on rack and remove from pan. When cake is cool, sprinkle with confectioners sugar.