Passover Sponge Cake

Ingredients

• 2 teaspoons lemon zest
• 1/4 cup lemon juice
• 9 large eggs, separated
• 1 3/4 cups sugar
• 1/4 cup club soda
• 1/2 cup potato starch
• 1/2 cup matzo cake meal

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.