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Guide

How long to cook a whole turkey

If you are reading this on Christmas morning with a bird on the counter, here is the short version: 180°C, fan 160°C, 30 minutes per kilo plus 40 minutes, covered in foil until the last 40 minutes, then rest it for half an hour.

Timing table Order a fresh turkey
A whole roast turkey resting under foil before carving

Timings by weight

At 180°C (fan 160°C), allow 30 minutes per kilo plus 40 minutes. Add 30 to 40 minutes if the bird is stuffed, and check the stuffing reaches 74°C too.

Turkey weightApprox. timeServes
4kg2 hr 40 min6 to 8
5kg3 hr 10 min8 to 10
6kg3 hr 40 min10 to 12
7kg4 hr 10 min12 to 14
8kg4 hr 40 min14 to 16
9kg5 hr 10 min16 to 18
10kg5 hr 40 min18 to 20

These are a starting point. Ovens vary more than people expect, and a bird straight from a cold fridge takes longer than one that has stood out. The only reliable test is 74°C in the thickest part of the thigh.

Defrosting, if you have to

Ours are fresh and never frozen, so this is for a supermarket bird. Allow 10 to 12 hours per kilo in the fridge. A 6kg turkey needs roughly three days, which is why the panic on the 23rd is an annual tradition. Never defrost at room temperature.

Step by step

The method

Nothing clever. Done in the right order, it works every year.

Step 1

Take it out early

Bring the bird out of the fridge an hour or two before it goes in. A cold centre is the most common reason a turkey takes longer than the table says.

Step 2

Heat the oven properly

Preheat to 180°C, fan 160°C, and let it come fully up to temperature. Putting a large bird into a half-heated oven throws every timing out.

Step 3

Butter and season

Work softened butter under the skin over both breasts, then butter and season the outside. Put a halved lemon and a few herbs in the cavity instead of stuffing.

Step 4

Cover and roast

Cover loosely with foil and roast for 30 minutes per kilo plus 40 minutes. Baste once or twice, no more.

Step 5

Uncover near the end

Take the foil off for the last 40 minutes so the skin browns and crisps properly.

Step 6

Test the thigh

Probe the thickest part of the thigh, near but not touching the bone. 74°C means done. If the juices still run pink, it needs longer.

Step 7

Rest for half an hour

Lift onto a warm board or platter, tent loosely with foil, and leave it for 30 to 45 minutes while you make the gravy and finish the potatoes.

What to do with the carcass

Do not bin it. An hour of doing almost nothing turns it into several litres of stock, and the broth is the best thing you will eat that week. Our stock and broth recipe walks through it, and the turkey and ham pie is what St Stephen's Day is for.

Quick answers

How long does a 5kg turkey take to cook?

About 3 hours 10 minutes at 180°C, fan 160°C, using 30 minutes per kilo plus 40 minutes. Confirm with a thermometer reading 74°C in the thickest part of the thigh.

How long do I defrost a frozen turkey?

Allow 10 to 12 hours per kilo in the fridge, so a 6kg bird needs about three days. Our turkeys are sold fresh and never frozen, so this only applies to a frozen supermarket bird.

Should I stuff the turkey?

Cook the stuffing in a separate dish. Stuffing in the cavity slows the heat reaching the middle, so the breast is dry by the time the centre is safe. If you must stuff it, add 30 to 40 minutes and check the stuffing itself reaches 74°C.

Where do I put the thermometer in a whole turkey?

The thickest part of the thigh, close to but not touching the bone. The thigh is the slowest part to cook, so if it reads 74°C the whole bird is done.

Do I need to baste a turkey?

Not much. Twice is plenty. Every time the oven door opens the temperature drops and the cooking time stretches, which does more harm than the basting does good.

How long should a turkey rest?

At least 30 minutes for a whole bird, and up to an hour is fine. It will still be hot, and it gives you the oven back for the roast potatoes.

Order a fresh turkey → What size do I need? Cooking a crown