First Preheat oven to 350 degrees F or 175 degrees C.
Second In a large bowl, combine flour, salt, 1/2 cup sugar and baking powder. Add egg, oil, yolks, lemon rind and water. Now Beat it with an electric mixer until it smooth.
Then 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.
For Filling: Beat cream to stiff peaks. Fold in lemon filling. Chill until stiff.
Finally to Assembling Cake: We Slice cake horizontally into 3 equal layers and Fill layers with 1/3 cup of filling. Spread remaining filling on top layer. We Decorate it with lemon slices, serve with family and enjoy with tastymaza.
