Remove turkey from the fridge and set it on the counter for 1½ hours to allow it to come to room temperature.
In a large saucepan heat chicken broth, onion, garlic, thyme, and butter. Bring mixture to a boil.
Reduce heat and simmer for 10 minutes.
Remove from heat and allow mixture to come to room temperature.
Place oven rack at lowest setting in the oven and preheat to 425℉.
Remove plastic wrap from turkey and drain off any excess liquid that has accumulated in the bottom of the pan, and discard.
Place a roasting rack in the bottom of a large roasting pan.
Place carrots and celery in the roasting pan and place the turkey on top.
Season turkey liberally with pepper.
Dip cheese cloth in cooled basting liquid until fully saturated.
Drape cheesecloth over the entire bird tucking it in along the legs and down the sides of the bird.
Pour the remaining liquid over the cheesecloth on the bird.
Place the turkey in the oven and cook for 45 minutes at 425°.
Reduce heat to 375℉, and continue to cook bird until it reaches an internal temperature of 165° F when pierced at the breast.
Roast bird for approximately 15 minutes for each pound, about an hour for every 4 lbs.
Remove cheese cloth during the last 10 minutes of cook time to brown the skin.
Remove bird from the oven and tent loosely with a lenght of aluminum foil. Allow bird to rest for 45 minutes before carving.