Leave it to thaw in the fridge and give at least 24 hours defrosting for every 4-5 lbs (2-2.5 kg) of weight.
The following are approximate cooking times for turkeys in an oven which is at 180°C/350°F/Gas Mark 4:
Size of turkey
|
Stuffed turkey
|
Unstuffed turkey
|
8-12lbs/3.5-5.5kg
|
3 hrs 20 mins – 4 hrs 40 mins
|
3 hrs – 4 hrs 20 mins
|
12-14lbs/5.5-6.5kg
|
4 hrs 40 mins – 5 hrs 20 mins
|
4 hrs 20 mins – 5 hrs
|
14-18lbs/6.5-8kg
|
5 hrs 20 mins – 6 hrs 40 mins
|
5 hrs – 6 hrs 20 mins
|
18-20lbs/8-9kg
|
6 hrs 40 mins – 7 hrs 20 mins
|
6 hrs 20 mins – 7 hrs
|
20-24lbs/9-11kg
|
7 hrs 20 mins – 8 hrs 40 mins
|
7 hrs – 8 hrs 20 mins
|