Instructions

Preheat oven to 350 degrees F (175 degrees C). In a large bowl, combine flour,
baking powder, salt, and 1/2 cup sugar. Add oil,egg yolks, water and lemon rind.
Beat with an electric mixer until smooth. In a small bowl, beat egg whites and
cream of tartar until peaks form. Gradually add 3/4 cup sugar, and beat until very
stiff and shiny peaks form. Fold 1/3 of the whites into the batter, then quickly fold
in remaining whites until no streaks remain. Turn batter into ungreased 10 inch
tube pan. Bake at 350 degrees F (175 degrees C) for 60 minutes or until a
toothpick inserted in the center comes out clean. Invert cake and cool completely
in pan. When cool, loosen edges and shake pan to remove cake.
To Make Filling: Beat cream to stiff peaks. Fold in lemon filling. Chill until stiff.
To Assemble Cake: Slice cake horizontally into 3 equal layers. Fill layers with 1/3
cup of filling. Spread remaining filling on top layer. Decorate with lemon slices