This simple, light cake is easy to make and provides the layers for our decadent Strawberry Lemon Trifle.
Ingredients
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Margarine, for pan
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Matzo meal, for pan
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4 large eggs, separated
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½ cup sugar
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1 pinch salt
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Grated zest of 1 orange
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½ cup potato starch
Directions
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Preheat the oven to 350 degrees. Grease a 9-by-9-inch baking pan with margarine. Dust pan with matzo meal; set aside.
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In the bowl of an electric mixer fitted with the whisk attachment, beat egg yolks on medium-high speed with 1/4 cup sugar until thickened, about 4 minutes. Transfer to a large mixing bowl. Wash and dry the mixer bowl and the whisk attachment.
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Place egg whites and salt in mixer bowl. Beat on medium speed with whisk attachment until soft peaks form. With machine running, slowly pour in the remaining 1/4 cup sugar; continue beating until stiff and glossy, about 3 minutes. Fold egg whites and orange zest into yolk mixture. Sift potato starch over the mixture, and fold in.
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Transfer the batter to the prepared pan. Bake until a cake tester inserted into the middle of the cake comes out clean, 10 to 15 minutes. Transfer pan to a wire rack, and let cool 15 minutes.