"This is a delicious light and airy textured sponge cake. It tastes just like the ones I used to buy at a Portuguese bakery...."
INGREDIENTS
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9 large eggs (room temperature)
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1 pinch salt
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1 1⁄2 cups granulated sugar
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1 2⁄3 cups all-purpose flour
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1⁄4 teaspoon baking powder
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Lemon zest (optional) or orange zest (optional)
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Icing sugar (to taste)