Brush the turkey with melted butter 5 minutes before the end of cooking. Cover with foil if it browns too quickly. The turkey is cooked when a meat thermometer reads 82 °C (180 °F) in the thickest part of the thigh, without touching the bone. The stuffing temperature should be 75 °C (160 °F). Don’t wait for the thighbone to detach for the turkey. At this stage of cooking the turkey is overcooked.