Passover Sponge Cake

Directions

1. 1
   Preheat oven to 350 degrees.
2. 2
   Beat egg yolks with sugar, soda, and lemon juice on medium high for 3 minutes.
3. 3
   Gradually add the potato starch and cake meal. Set aside.
4. 4
   Beat egg whites until stiff.
5. 5
   Fold yolk mixture into whites.
6. 6
   Add lemon zest. Beat for 2 minutes.
7. 7
   Pour into an ugreased large tube pan. Bake 1 hour and 10 minutes.
8. 8
   Invert until completely cool. Run a knife arond the cake and remove from pan.