Strawberry-Rhubarb Pie

INGREDIENTS

• :
• 2¼ cups all-purpose flour
• 1 teaspoon salt
• 2 tablespoons granulated sugar
• 11 tablespoons butter, cut into ¼-inch cubes
• 7 tablespoons vegetable shortening, chilled
• 1/3 cup ice water
• 3 cups strawberries, hulled and sliced
• 3 cups rhubarb, trimmed and cut into 1-inch pieces
• ¾ cup granulated sugar
• 1 tablespoon grated orange zest
• 2 teaspoons lemon juice
• ¼ teaspoon vanilla extract
• 4 tablespoons quick-cooking (instant) tapioca
• 2 tablespoons unsalted butter, cut into small pieces