INGREDIENTS
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2 1/2 cups (312 grams) all-purpose flour
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1 cup (198 grams) sugar
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2 teaspoons lemon zest
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1/2 teaspoon kosher salt
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1 cup (227 grams) cold unsalted butter, cubed
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1 large egg yolk
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3 cups fresh or frozen blueberries
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3 tablespoon granulated sugar
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1 1/2 teaspoons cornstarch
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1 tablespoon lemon juice
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1 teaspoon lemon zest