Hello! For turkey gravy, my go-to thickener is definitely flour! It's a classic choice that gives your gravy a smooth and velvety texture. Just make sure to whisk it into your drippings or broth gradually to avoid any lumps. If you're looking for a gluten-free option, cornstarch works like a charm too! It creates a glossy finish and thickens up your gravy beautifully. Whichever you choose, just remember to taste as you go and adjust the seasoning accordingly. Happy gravy making!