Start by chopping the turkey backbone into 3 pieces and cutting the neck in half.
Add the turkey pieces and the heart from the giblets to a large bowl, along with the onion, garlic, celery, carrots, parsnips, herbs, salt, and pepper.
Drizzle in the oil and mix the ingredients until they are coated.
Transfer the mixture to a roast pan or sheet and spread it out to flatten the ingredients. At this stage, I usually place the turkey on a rack over the vegetables.
Roast in the oven on a middle rack at 425° convection for 60 to 70 minutes or until well browned.
Drain off any rendered fat through a chinois or fine mesh strainer into a shallow pan or plate and place it in the freezer to solidify.
Next, transfer everything from the pan into a large-sized sauce pot.
With the remaining fond stuck to the bottom of the pan place it over a burner, or two burners over medium heat, and deglaze with 1 cup of white wine. Scrape the pan to remove all the goodies stuck to the bottom.
Transfer the mixture to the pot.
Pour in the chicken stock and cook over medium-to-medium high heat for 15 to 20 minutes to reduce and concentrate the flavors.
Strain the mixture completely through a chinois or fine mesh strainer into a separate pot.
Over medium heat, slowly stir in the beurre manie about ¼ to 1/3 cup at a time until it is incorporated, thick, and creamy. This will take 4 to 6 minutes total. You will use most of the beurre manie.
Finish the sauce by stirring 3 to 5 tablespoons of the chilled fat from the freezer.
Adjust any seasonings with salt and pepper and serve.
Notes
Make-Ahead: You can make this recipe up to 3 days ahead. Keep cool until ready to use.How to Store: Cover and keep in the refrigerator for up to 4 days. You can freeze this, but the sauce may break, and you will need to rethicken it.How to Reheat: Add the desired amount of turkey gravy to a small saucepot and heat over low heat until hot. You may need to rethicken it using a small amount of roux or beurre manie.You can use a meat cleaver to chop the turkey's backbone and neck.If you are making this for a holiday meal, I highly recommend prepping the vegetables 1 to 2 days ahead to alleviate cooking pressures.Substitute the 3 sprigs of fresh rosemary, thyme, and sage with 1 teaspoon of each dry.Fond are the yummy brown proteins in food that stick to the bottom of the pan as they are cooked. It is loaded with umami flavors and should always be released into the food to make it tastier.You can also thicken the gravy with a traditional roux or slurry.The sauce should easily coat the back of a spoon, known as nappe.Be sure to taste the sauce before and after adding the frozen fat to see what else the gravy may need.There is ample time to make this sauce while your turkey rests after roasting.You can garnish the gravy at the end with finely minced herbs such as thyme, chives, or parsley.