Chicken Empanada

Name: Chicken Empanada
Ingredients: 3 cups all-purpose flour ((see note)); 1½ teaspoons kosher salt (use half for table salt); 3 tablespoons granulated sugar; 8 ounces unsalted butter ( cold; cut into small cubes); 1 egg; ¼ cup cold water (or more (see note)); 2 cups cooked chicken (chopped or shredded (see note)); 3 cloves garlic (minced); ½ cup minced onion; ¾ cup small-diced potatoes; ½ cup small-diced carrots; ¼ cup fresh or frozen peas; ¼ cup raisins; 1 tablespoon flour; 1 tablespoon soy sauce; 1 teaspoon fish sauce; 1 teaspoon granulated sugar ((see note)); Neutral oil (canola, avocado, or other vegetable oils) (for sautéing & frying)