Once cooked, cover the turkey and leave to stand for around 30 minutes before carving.
To make a gravy for the dinner, Mary adds chicken stock, white wine and leeks to the turkey roasting tray along with the bird.
They combine with the meat juices to make a delicious base for the gravy.
While the turkey is resting, simply mix a little flour with some fat from the roasting juices and then “continuously whisk as the liquid is added, otherwise it may become lumpy.. You know the consistency is perfect when it coats the back of a spoon,” said Mary.
Mary Berry returns to television screens tonight with her Mary Berry Saves Christmas show.