INGREDIENTS
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For the Cake:
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1 cup all-purpose flour
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1/2 cup confectioners' sugar
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1/2 teaspoon salt
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12 large egg whites, at room temperature (about 1 1/2 cups)
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1 teaspoon vanilla extract
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1 teaspoon orange extract
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1 tablespoon finely grated orange zest
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1 1/2 teaspoons cream of tarter
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1 cup granulated sugar
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For the Glaze:
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1 1/4 cups confectioners' sugar
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1/2 cup orange juice
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1 teaspoon vanilla extract
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zest of orange, grated