Meat Pop-Up Thermometers and Disposable Cooking Timers

At a preset temperature, the firing material inside releases a spring-loaded stem. The raised stem gives a visual indication that the area around the timer reached its trigger point.

USDA describes properly placed pop-up devices as reliable within a narrow tolerance, but still recommends checking safety and doneness with a conventional food thermometer.

Follow the package directions for the specific food. Placement is critical because the timer measures only the meat immediately around its sensing section.

Disposable pop-up timers are intended for one cook. Use a reusable digital or dial food thermometer when you want repeated numeric readings.

Usually leave a factory-installed indicator in place and follow the processor's instructions. Check the bird separately in the recommended locations with a food thermometer.