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Commonly used in turkeys and roasting chickens since 1965, the “pop-up” style disposable cooking device is constructed from a food grade nylon. The inside contains a stainless steel spring and organic firing material. The organic firing material is specifically designed to dissolve at specific predetermined temperatures. Once the firing material dissolves, the stainless steel spring releases the stem, allowing it to “pop up.” This indicates that the food has reached the correct final temperature for safety and doneness.
Pop-up style disposable cooking devices are reliable to within 1 to 2 °F, however, proper placement is important. Checking with a conventional food thermometer is always recommended as an added precaution for properly gauging both safety and doneness. For all forms of poultry, including ground, pieces, and whole birds, a food thermometer should reach a minimum of 165°F.
