Light orange sponge layers sandwiched with orange filling.

Steps

1. Separate eggs; beat whites and cream of tartar until stiff; add the yolks one at a time beating well before addition of each yolk.
2. Add the sugar gradually still beating with egg beater.
3. Remove beater and add the rind and orange juice.
4. Fold in flour, baking powder and salt sifted together.
5. Bake in a moderate oven at 325°F in two layer pans for about 18–20 mins.
6. Put cakes together with Orange Filling.