INGREDIENTS
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1 batch Basic Pastry
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4 cups plums, pitted and sliced
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2 cups blackberries
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1/2 cup plus 2 tablespoons sugar
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1 teaspoon vanilla extract
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3 tablespoons lemon juice
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1 tablespoon lemon zest
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1/4 cup instant tapioca
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1 egg, beaten
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2 tablespoon turbinado sugar