For some, the gravy is the best part of Thanksgiving. Made by thickening the pan drippings and turkey giblet broth with roux (a mixture of flour and fat), gravy is pure essence of turkey. In this video, Fine Cooking test kitchen manager Jennifer Armentrout demonstrates how to prepare gravy right in the roast pan. She details the best kitchen tools to use and also offers substitutes from those with limited tools. And, she shares some of her favorite preparation techniques for preventing lumps and adjusting the thickness and consistency.