INGREDIENTS
1 1/2 cups
cake flour
1/2 cup
sugar
2 tsp
baking powder
1/2 tsp
salt
5 tbsp
butter
1/3 cup
orange juice
1 tsp
orange zest
6
egg yolks
1 tsp
vanilla extract
6
egg whites
1/2 tsp
cream of tartar
1/2 cup
sugar
1 cup
confectioners' sugar
2 tbsp
orange juice
2 tsp
orange zest