2 c. sifted all-purpose flour
3/4 c. sugar
3/4 c. firmly packed brown sugar
1 tbsp. baking powder
1/2 tsp. salt
1/2 c. vegetable oil
7 eggs, separated
3/4 c. cold water
2 tsp. maple flavoring
1 tsp. cream of tartar

Combine dry ingredients in a medium mixing bowl. Make a well in center; add oil, egg yolks, water and flavoring. Stir just until moistened.

Beat egg whites (at room temperature) in a large mixing bowl until foamy; add cream of tartar, beating until stiff peaks form. Gently fold yolk mixture into egg white. Pour batter into an ungreased 10 inch tube pan, spreading evenly with spatula. Bake at 325 degrees for 1 hour and 10 minutes or until cake springs back when lightly touched. Cool 40 minutes, and remove cake from pan.