Turkey cooking time and internal temperature – get it right in the oven

Turkey is a festive but surprisingly forgiving roast, as long as you get one thing right: measuring the internal temperature. Oven heat, the size of the bird and whether you cook it whole or as a breast fillet change the cooking time so much that a thermometer beats the clock every time.

The right internal temperature for turkey

According to the Finnish Food Authority (Ruokavirasto), poultry is cooked through to at least 75°C. The same limit applies to turkey whether you roast a whole bird, a breast fillet or legs. Turkey is never served pink – it is cooked all the way through.

How to measure in the right spot

Insert the thermometer into the thickest part of the meat – on a whole bird that is the thickest part of the thigh – so the tip touches neither bone nor a layer of fat. Bone conducts heat and gives a reading that is too high. For a breast fillet, measure in the centre. With a large bird, check the reading in two places.

Cooking time is only an estimate

Cooking time depends on the weight of the bird, the oven temperature and how cold the meat is when it goes in. A large whole turkey needs several hours at a low temperature, while a breast fillet is done considerably sooner. Treat the time in a recipe as a frame, start measuring well before you expect it to be ready and leave yourself a buffer.

Thawing and prep decide the result

A frozen turkey is thawed in the fridge, not at room temperature, and a large bird needs several days for it. Plan plenty of time for thawing and keep the bird in a dish so the liquid that drips out does not reach other foods. Dry the surface before roasting, season generously and brush with oil or melted butter – a dry surface browns better.

A juicy turkey comes from resting

Take the bird out of the oven when the thermometer shows your target temperature and let it rest under foil before carving. On a large bird the heat evens out considerably longer than in a single fillet. Carve only after resting so the juices stay in the meat instead of running onto the board.

Practise poultry doneness on everyday dinners

It is worth learning to measure internal temperature on ordinary chicken dishes before a festive roast. Pan-fried chicken fillet with oven-roasted root vegetables and honey is a good example of an everyday dinner where poultry is cooked through yet stays juicy.