Classic Apple Pie

INGREDIENTS

• :
• 2½ cups all-purpose flour, plus extra for dusting
• 1 teaspoon salt
• 2 tablespoons granulated sugar
• 12 tablespoons unsalted butter, chilled, cut into ¼-inch pieces
• 8 tablespoons vegetable shortening, chilled
• 6 to 8 tablespoons ice water
• 2 pounds Granny Smith apples (about 4 medium apples)
• 2 pounds McIntosh apples (about 4 medium apples)
• ¾ cup granulated sugar
• 1½ tablespoons lemon juice
• 1 teaspoon lemon zest
• ¼ teaspoon salt
• ¼ teaspoon ground cinnamon
• 1/8 teaspoon ground allspice
• 1 egg white, beaten lightly
• 1 tablespoon granulated sugar, for topping