Crust

2 2/3 cups all-purpose flour
2 teaspoons sugar
3/4 teaspoon salt
1 stick (4 ounces) cold unsalted butter, cut into 1/2-inch pieces
1/2 cup plus 1 tablespoon (4 ounces) cold solid vegetable shortening
1/2 cup ice water

Filling

8 large, ripe but firm peaches (3 1/2 pounds)
3/4 cup sugar
1 1/2 tablespoons fresh lemon juice
1/4 cup plus 1 tablespoon all-purpose flour
1 1/2 tablespoons unsalted butter, thinly sliced
Egg wash made with 1 egg yolk mixed with 2 tablespoons water
Bourbon Whipped Cream, for serving