Do pop-up thermometers work? I don’t trust them

The Brits, known for there aversion of food thermometers – make mine steaming hot – have decide to promote a new Pop Up® disposable cooking thermometer timer device for use with all the turkeys being sold over the counter this year.

chicken.cook.thermometerThe timers are designed  to release a red button exactly when the bird has reached its optimum level of doneness at the thickest part of the meat, thus eliminating the annual ‘turkey guesswork’ and assuring a perfectly cooked and safe product.

I use a tip—sensitive digital thermometer because nothing can be more idiot-proof.

There was some group in Guelph (that’s in Ontario, Canada) that provided such advice 11 years ago,

But university beurotypes are forced to go after the easy dollar and cleaned me out for about $750K.

Whatever, I got to meet and marry Amy.

And then Kansas State University cleaned me out for $200K because, as a full professor, I got fired for bad attendance.

But back to the basics: do pop-up thermometers work?

Friend of the barfblog.com, Don Schaffner, provided a relevant reference:

Temperature histories at critical points and recommended cooking time for whole turkeys baked in a conventional oven

H.C. Chang, J.A. Carpenter, and R.T. Toledo

Time-temperature histories and cooking times were determined for turkeys bake at162.8°Cf rom4.44°Ct to an endpoint of82.2°C in the thigh joint or breast.Tur- keys(128)  infiveweightclassesfrom5.9to10.8kg(0.9kgincrements)were equallydividedintofresh,frozen,stuffed,unstuffed,and cooked shielded orunsheilded groups. The slowest heating point was either the wing joint or stuff- inggeometriccenter.Cooking time for unsheilded turkeys was 155min plus11 min/kg,unstuffed,and200minplus8.8min/kg,stuffed.

amy.thermometerMedian cooking loss was 23%.Shielding of breasts prolonged cooking time.The cooking end point of f82.2°C in the thigh joint provided adequate lethality against Salmonella in the slowest heating points of both stuffed and unstuffedbirds.

 

JOURNAL OF FOOD SCIENCE—Volume 63, No. 2, 1998