INGREDIENTS
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9 ounces all-purpose flour
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9 ounces rye flour
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12 ounces unsalted butter, cold and cut into cubes
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1 teaspoon salt
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12 to 16 tablespoons ice water
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1 tablespoon apple cider vinegar
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5 cups blueberries, about 2 1/2 pints
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1 cup sugar
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1/4 cup flour
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1 pinch salt
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Zest of one lemon
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1 teaspoon grated fresh ginger
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1 vanilla bean, seeds scraped
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1 egg for egg wash
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3 tablespoons crunchy sugar to finish