INGREDIENTS
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Nonstick cooking spray
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3/4 cup cake flour
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1 teaspoon baking powder
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1/2 teaspoon salt
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5 large eggs, separated
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1/2 cup granulated sugar
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1 teaspoon vanilla extract, plus 1/4 teaspoon
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2 tablespoons confectioners' sugar, plus 1/4 cup
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2 cups heavy cream
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1 1/2 cups strawberry jam
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Fresh mint sprigs, for garnish