INGREDIENTS
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Unsalted butter, for pans
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3/4 cup all-purpose flour, plus more for pans
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3/4 cup cornstarch
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6 large eggs, separated
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3/4 cup plus 6 tablespoons granulated sugar
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1 1/2 teaspoons pure vanilla extract
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1/4 teaspoon salt
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Confectioners' sugar, for dusting
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1 1/2 cups heavy cream
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1/3 to 1/2 cup good-quality raspberry jam, strained