Whisk together the flour and water in a small mixing bowl.
Gradually whisk together the flour/water mixture with the neck broth and turkey drippings in a large saucepan on medium heat.
Continue whisking and stirring the gravy until it begins to thicken and is ready to serve.
Add salt and pepper, to taste.
Serve with turkey, mashed potatoes, and stuffing.
Notes
*Take your time whisking in the flour/water mixture to avoid any lumps in your gravy. It's a given that you'll have a few lumps, but you can minimize them by whisking the gravy.