Lamb and Sweet Potato Pot Pie

Name: Lamb and Sweet Potato Pot Pie
Ingredients: Filling; 1 pound lamb, cubed; 2 celery stalks, sliced; 1/2 large red onion, chopped; 4 cloves garlic, minced; 2 large sweet potatoes, parboiled, peeled and cubed; 1 cup frozen peas; 1/2 teaspoon caraway seeds; 1 bay leaf; 3 tablespoons flour; 1 tablespoon cornstarch; 3 ounces demi glace; 1/2 cup water; 1 cup red wine; 1 tablespoon kosher salt; 1/2 tablespoon black pepper; Olive oil; Crust; 2 1/2 cups flour; 1 teaspoon kosher salt; 1 tablespoon sugar; 2 teaspoons fresh rosemary, chopped; 1 1/2 teaspoons fresh thyme, chopped; Zest of 1 orange; Zest of 1 lemon; 3/4 cup unsalted butter; 1/2 cup shortening; 6-8 tablespoons ice water; 1 1/2 tablespoons milk