INGREDIENTS
2 1/4 cups
cake flour
1 1/2 cups
white sugar
1 tbsp
baking powder
1 tsp
salt
5
egg yolks
1/2 cup
vegetable oil
3/4 cup
orange juice
1 tbsp
orange zest
1 tsp
vanilla extract
1 cup
egg whites (from about 8 large eggs)
1/2 tsp
cream of tartar
Icing:
1/3 cup
butter, softened
1 1/2 tbsp
orange zest
1 tsp
lemon zest
1/4 tsp
salt
1
egg yolk
4 cups
confectioners sugar
3 tbsp
orange juice
1 tbsp
lemon juice