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How to use a meat thermometer on the grill

Updated: 23 October 2026

You have the probe in your hand, the lid is up, and the number is already being treated as done. That is the usual miss. How to use a meat thermometer starts with where the tip sits, then with waiting until the digits stop, then with washing the probe before the next raw piece. Peter F. wrote this from the Food Standards Agency, BBC Good Food’s placement notes, and the amazon.co.uk lines in our [grill thermometer comparison](/hub/grill-accessories/grill-thermometer), on 20 October 2026. We did not run a lab. Which meats may stay pink is on the [barbecue temperatures](/hub/grill-accessories/grill-thermometer/sub/grill-thermometer-barbecue) page. A purchase through our links can earn a commission at no extra cost to you.

You have the probe in your hand, the lid is up, and the number is already being treated as done. That is the usual miss.

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ThermoMaven ThermoMaven F1 Turbo

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ThermoMaven ThermoMaven F1 Turbo
9.4/10about £24.99
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TempPro TempPro TP03H black

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TempPro TempPro TP03H black
8.8/10about £8.99
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TempPro TempPro TP17 dual wire

Alternative

TempPro TempPro TP17 dual wire
8.2/10about £18.94
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On this page
  1. 1.Where the tip goes
  2. 2.Wait, then lock
  3. 3.Clean it, then trust it
  4. 4.When the tool is the wrong shape

Where the tip goes

The sensor that matters is the tip. Push it into the thickest part, off bone, fat, and the cavity. For a whole chicken, BBC Good Food points to the thickest part of the thigh, between thigh and breast. For a burger, come in from the side so you are not reading the grate. A folding pen can reach the middle of a chop. The LYMIN complaint is a wireless probe that must be fully embedded: one buyer sent it back for thin food. The Inkbird probe is 10.2 cm by 6 mm. Match the shape on the buying guide before you cook.

Wait, then lock

A headline such as 1–3 seconds is not a settled reading. One UK review of the AWLKIM says the digits keep climbing after the tip goes in. Leave the tip still until the number stops, then use hold or lock if the thermometer has it. BBC Good Food notes that large joints can rise by at least another 5°C while they rest. That note is not a reason to pull poultry early. The FSA target is a time at a temperature in the middle, such as 70°C for 2 minutes. A moving number is not a finished cook. An instant-read pen does not stay on the grate.
ThermoMaven ThermoMaven F1 Turbo

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ThermoMaven ThermoMaven F1 Turbo
9.4/10about £24.99
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Clean it, then trust it

The Food Standards Agency tells you to clean the probe. At home that means hot soapy water on the metal between raw chicken and food you will eat, then a rinse and a dry. Caterers follow Safer Food, Better Business. The same direction applies at home. IP67 and IPX6 on the ThermoMaven and the AWLKIM still say rinse only or hand wash. A TP17-class cable is not waterproof in the reviews, so keep the lead and the plug dry. One shared review says a unit broke while being cleaned after four years. Stirred ice should sit near 0°C, and boiling water near 100°C at sea level, lower on a hill. ETI’s point is that this check is not a UKAS certificate. If both ends are far out and there is no adjustment, retire it.

When the tool is the wrong shape

A wireless probe that is only half in the meat reports a number that is not the centre. Use a pen for thin patties. Shared TP17 reviews warn against a cable through the flame. Route it out of a side gap. If the phone drops, the tip still has to be in the centre when you open the lid. A YOTOM dial does not become that reading. If you cannot get a stable digit in poultry, pork, or mince, do not serve on colour alone. Illness after food you do not trust is NHS 111 or urgent care.

Common questions

Where do I put the thermometer in a chicken?
Put the tip in the thickest part of the thigh, between thigh and breast, off the bone and out of the cavity. Good Food points at that junction because a breast reading can look done while the thigh is behind. Wait until the number stops. The thigh target is the Food Standards Agency table.
How long do I wait for the number?
Wait until the digits stop, even if the box says one to three seconds. The AWLKIM review describes a display that keeps climbing after the tip is in. Good Food’s rest note of at least another 5°C on a large joint is their observation, not permission to stop poultry early.
What if the tip hits bone?
Pull back and place the tip in muscle beside the bone. Bone can read differently from the meat you are judging. Check a second spot in the thickest part if the first number jumped on contact. Do not average a bone reading with a meat reading.
How do I check the probe in iced water?
Fill a glass with ice and a little water, stir, and put the tip in the ice, not against the glass. A sound probe sits near 0°C. Boiling water is near 100°C at sea level and lower on a hill. This sense check is not a UKAS certificate.
Can I leave an instant-read in the oven?
A folding pen is for a brief check with the door or lid open. The body is not built to live at grill heat. Use a wired leave-in or a wireless probe if the food must stay closed, and keep cables off the flame.
How do I wash the probe between raw and cooked?
Wash the metal tip in hot soapy water after raw meat, rinse, and dry it before it touches food you will eat. Do not soak a pen whose listing says rinse only, and do not dunk a TP17-style cable. A wipe on a cloth is not a wash.
Can the cable cross the flame?
Route a wired probe out of the cooker away from the burner. Reviews on the TP17 family warn that flame on the lead kills the probe. If the only path is through flame, use a wireless probe with the case nearby, or open the lid and use a pen.

Related pages

Best meat thermometer UK

Wireless or instant-read

Grill thermometer

Barbecue meat temperature UK: what the centre must reach

Grill thermometer buying guide: pen, cable, or dial

Sources

Public UK sources used for the cooking rules and the IP codes. Listing prices, stars and review counts are the amazon.co.uk figures for these ASINs. Retrieved 21 October 2026.

  1. Food Standards Agency: Cooking your food (retrieved 21 October 2026)
  2. Food Standards Agency: Bank holiday barbecue checklist (retrieved 21 October 2026)
  3. GOV.UK: Burgers (retrieved 21 October 2026)
  4. GOV.UK: Cooking your food (retrieved 21 October 2026)
  5. Safer Food, Better Business: cooking safely (retrieved 21 October 2026)
  6. ETI: What is a calibration certificate? (retrieved 21 October 2026)
  7. CSA Group: IEC 60529 IP testing (retrieved 21 October 2026)
  8. BBC Good Food: best meat thermometers 2026 (retrieved 21 October 2026)