Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     3/4  cup           white rice flour
     1/3  cup           potato starch flour
   1 1/2  teaspoons     baking soda
   2      teaspoons     baking powder -- gluten free
     1/4  teaspoon      salt
   1      tablespoon    unflavored gelatin -- (1 env)
     1/3  cup           margarine
     1/3  cup           white sugar
   3                    egg yolks
   1      teaspoon      lemon peel
   1      teaspoon      vanilla
     3/4  cup           mashed banana
     1/4  cup           plain yoghurt
   3                    egg whites

Preparation:

This is a special recipe made without gluten. Preheat oven to 350 F. Grease a 9 x 5 inch loaf pan. Sift flour, baking soda, baking powder, salt and unflavored gelatin together. Cream margarine, sugar, egg yolks and vanilla thoroughly. Continue beating until mixture is light. Mix in lemon peel, mashed banana and yoghurt. Add dry ingredients. Beat egg whites to stiff peaks but not so they are dry. Fold egg whites into the mixture. Place in the greased loaf pan. Bake for 1 hour.