Passover Sponge Cake
This light sponge cake is made with matzo cake meal for a nice dessert for Passover. For chocolate sponge cake add 1/2 cup of cocoa to the batter.
egg yolks
8
white sugar
1
cup
orange zest
1
tablespoon
matzo cake meal
¾
cup
potato starch
¼
cup
egg whites
8
white sugar
½
cup
fresh orange juice
1 ½
tablespoons
 Preheat the oven to 325 degrees F (165 degrees C). Grease and line the bottom of a 10-inch tube pan with parchment paper.
  Whisk egg yolks in a medium bowl until lighter in color. Gradually add 1 cup sugar and orange zest; continue whisking until thick and pale, about 7 minutes.
  Sift matzo cake meal and potato starch together; set aside.
  Beat egg whites in a large glass or metal mixing bowl until foamy. Gradually add remaining 1/2 cup sugar, continuing to beat until whites form stiff peaks. Fold matzo mixture into yolk mixture alternately with orange juice. Fold 1/3 of the whites into the batter, then quickly fold in remaining whites until no streaks remain. Spread evenly into the prepared pan.
  Bake cake in the preheated oven, checking after 45 minutes, until a toothpick inserted into the center of the cake comes out clean, about 1 hour. Invert onto a wire rack to cool. Run a knife around the sides of the cake before removing from the pan.
