INGREDIENTS
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1 disk Pate Sucree for Rhubarb Meringue Pie
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All-purpose flour, for surface
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2 pounds rhubarb, trimmed and cut crosswise into 3-inch pieces
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1 3/4 cups sugar
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1/4 cup cornstarch
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Coarse salt
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3 large egg yolks plus 4 large egg whites
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2 tablespoons unsalted butter