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Guide
Yes, if the thermometer is specifically designed for leave-in cooking. Remove instant-read thermometers after each check unless their instructions clearly say otherwise.
Read the label or manual before heating it. Oven-safe dial thermometers, wired oven probes and compatible wireless probes are made to stay in food; ordinary instant-read thermistors and thermocouples are generally used only for a quick check.
A heat-resistant probe does not automatically make the display oven-safe. With a wired model, route the cable as directed and keep the base outside the oven unless the manufacturer explicitly permits another arrangement.
Place the sensing area in the thickest edible portion, away from bone, gristle and large pockets of fat. On a thin piece, insert from the side so the sensor reaches the center.
A leave-in thermometer is most useful when its alarm gives you time to check another location. Food can heat unevenly, so confirm doneness in more than one spot when the cut is large or irregular.
After cooking, use heat protection on hot probes and cables. Clean the food-contact section according to the manual, and never immerse a connector or display unless its stated protection allows it.
Common questions
Only if it is an oven-safe leave-in model. Many digital instant-read thermometers must be removed immediately after the reading.
You may leave an oven-safe or compatible probe in place. Position it in the thickest part of the breast or inner thigh as directed, without touching bone.
A leave-in wireless probe can, provided the insertion depth and internal and ambient temperatures remain within its specified limits.
The display, handle or cable may not have been rated for oven heat. Stop using a damaged thermometer and replace it with a model approved for the intended cooking environment.
Keep exploring
Use a leave-in probe to track the cook and an instant-read model to check more than one spot before serving.
A fast, thin probe works well for portions; a heat-safe leave-in probe makes a whole roast easier to monitor.
A fast instant-read probe is the most practical choice for steaks; insert it from the side into the center.
Start with a dependable instant-read thermometer; add a leave-in or wireless probe when you want continuous monitoring.