Cloud Sponge Cake

Directions

1. 1
   Stir together flour,
2. 2
   baking powder and salt; set aside. In large bowl of
3. 3
   mixer,
4. 4
   beat
5. 5
   egg
6. 6
   yolks
7. 7
   at high speed until thick and lemon-colored. Gradually
8. 8
   beat
9. 9
   in
10. 10
    water until pale and foamy.
11. 11
    Gradually beat in sugar until completely dissolved, about 8 to 10 minutes.
12. 12
    Beat in juice and orange rind.
13. 13
    Fold in flour mixture in 3
14. 14
    additions into yolk mixture; set aside.
15. 15
    In small bowl of mixer,
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    using
17. 17
    clean beaters, beat egg whites and cream of tartar
18. 18
    until
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    stiff.
20. 20
    Gently
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    fold into batter.
22. 22
    Pour mixture into a
23. 23
    10-inch
24. 24
    ungreased tube pan.
25. 25
    Bake in preheated 325° oven for about
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    1
27. 27
    hour or
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    until
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    cake springs back when lightly touched.
30. 30
    Invert pan
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    on neck of bottle and cool.
32. 32
    When completely cooled, use
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    thin
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    bladed
35. 35
    knife to loosen cake from pan.