Daffodil Cake

Directions

1. 1
   Sift flour and 3/4 cup sugar three times.
2. 2
   Reserve.
3. 3
   Beat egg whites, cream of tartar and salt in large bowl until soft peaks form, 2 minutes.
4. 4
   Gradually beat in 1 cup sugar to form stiff peaks, 3 to 4 minutes.
5. 5
   Gently fold 1/2 cup flour mixture into whites.
6. 6
   Repeat with remaining flour mixture, 1/2 cup at a time. Add vanilla.
7. 7
   Remove 1/3 batter to medium-size bowl.
8. 8
   Beat yolks, 2 tablespoons flour and 2 tablespoons sugar in bowl until pale yellow and ribbony, for about 2 to 3 minutes.
9. 9
   Stir in peel.
10. 10
    Fold yolk mixture into reserved egg white batter mixture.