Pie Dough Shell

Ingredients

• 2 1/2 cups all-purpose flour
• 1 teaspoon salt
• 2 tablespoons sugar
• 10 tablespoons unsalted butter, cut into 1/2-inch pieces, cold
• 10 tablespoons vegetable shortening, cut into 1/2-inch pieces, cold
• 5 to 7 tablespoons ice water
• 1 teaspoon vinegar