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1
FOR THE FILLING: Select 6 ounces misshapen, underripe, or otherwise unattractive berries, halving those that are large; you should have about 11/2 cups. In food processor, process berries to smooth puree, 20 to 30 seconds, scraping down bowl as needed. You should have about 3/4 cup puree.
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2
Whisk sugar, cornstarch, Sure-Jell, and salt in medium saucepan. Stir in berry puree, making sure to scrape corners of pan. Cook over medium-high heat, stirring constantly with heatproof rubber spatula, and bring to full boil. Boil, scraping bottom and sides of pan to prevent scorching, for 2 minutes to ensure that cornstarch is fully cooked (mixture will appear frothy when it first reaches boil, then will darken and thicken with further cooking). Transfer to large bowl and stir in lemon juice. Let cool to room temperature.
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3
Meanwhile, pick over remaining berries and measure out 2 pounds of most attractive ones; halve only extra-large berries. Add berries to bowl with glaze and fold gently with rubber spatula until berries are evenly coated. Scoop berries into pie shell, piling into mound. If any cut sides face up on top, turn them face down. If necessary, rearrange berries so that holes are filled and mound looks attractive. Refrigerate pie until chilled, about 2 hours. Serve within 5 hours of chilling.
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4
FOR THE WHIPPED CREAM: Just before serving, beat cream and sugar with electric mixer on low speed until small bubbles form, about 30 seconds. Increase speed to medium; continue beating until beaters leave trail, about 30 additional seconds. Increase speed to high; continue beating until cream is smooth, thick, and nearly doubled in volume and forms soft peaks, 30 to 60 seconds.
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5
Cut pie into wedges. Serve with whipped cream.
