INGREDIENTS
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8 cups fresh blackberries
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1 1/4 cups sugar
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Zest and juice of 1/2 lime
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1 Tbs. cornstarch
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1 1/4 cups all-purpose flour
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1 1/4 tsp. baking powder
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1/4 tsp. baking soda
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1/8 tsp. fine sea salt
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6 Tbs. (3/4 stick) unsalted butter, cut into small cubes and chilled
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1/4 cup buttermilk