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Doneness Versus Safety; USDA
Topic Started: Dec 27 2004, 04:50 AM (28 Views)
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Doneness Versus Safety

USDA - It's hard to think about the holidays without thinking about food -- roast ham, tender brisket with gravy, perhaps even a spicy deep-fried turkey. And don't forget the creamy mashed potatoes, the pies, the cookies, and all the other special treats for the holiday season. With these fond thoughts of holiday foods comes pressure -- pressure to prepare everything just right and pressure to serve safe food to all those guests.

The cookies and mashed potatoes are relatively straightforward, but how do you know if a turkey or a beef roast is thoroughly cooked? Is "done" the same as "safe"?

There are four simple steps that are critical to food safety:


Clean: Wash hands and surfaces often;
Separate: Don't cross-contaminate;
Cook: Cook to proper temperatures;
Chill: Refrigerate promptly.

These four steps are considered by food safety experts to be critical control points to preventing foodborne illness. A critical control point is a process or handling practice that has been identified as being essential or critical in preventing foodborne illness. These practices, which prevent or control the harmful bacteria associated with foodborne illness, are under the direct control of the consumer. They are purchasing, storing, pre-preparing, cooking, serving, and handling leftovers. Failure to take appropriate action at these critical points could result in foodborne illness.

COOKING: A CRITICAL CONTROL POINT

Food safety experts agree that foods are properly cooked when they are heated for a long enough time and at a high enough temperature to kill the harmful bacteria that cause foodborne illness. How can you tell if food has been heated thoroughly? The only accurate way is to use a food thermometer, which measures the internal temperature of cooked meat and poultry. There are some foods, such as poultry, that will give visual signs of "doneness," but other foods, such as ground beef, will not.

WHAT IS "DONE?"

Webster's dictionary defines "doneness" as the condition of being cooked to the desired degree. While food safety experts stress the internal temperature that ensures destruction of pathogens in food, "doneness" reflects subjective qualities such as the appearance, texture, and optimum flavor of a food. Recent research has shown that these indicators are not reliable for safety. Only a food thermometer can be relied upon to accurately ensure bacterial destruction. Visual signs of doneness should be reserved for situations in which doneness is reached after the food has reached a safe temperature.

WHAT IS "SAFE?"

POULTRY

Poultry will generally reach a safe temperature (160 degrees F) before it is "done." At 160F, pathogenic bacteria have been destroyed, but poultry will still be pink and raw looking near the bone, and the juices will be pink and/or cloudy. By 170F for white meat and 180F for dark meat, the flesh of poultry will no longer be pink and the juices will be clear. With whole chickens and turkeys, the joints will move easily.

Although a whole chicken or turkey and poultry parts will visually indicate that they have been thoroughly cooked, stuffed poultry will not. There is no way that a consumer can tell by the juices, the tenderness or color of the flesh, or even by wiggling a drumstick if the center of the stuffing has reached 165F. Only by verifying the internal temperature of both the bird and the stuffing with a food thermometer can a consumer be sure the product has been thoroughly cooked.

BEEF

Beef roasts cooked to 160F will generally have very little pinkness to the meat, and the juices will not be pink or red. Below the temperature of 160F, the center of the roast will be pink or red, depending on the internal temperature. A beef roast cooked to 145F in the center can be considered safe since the exterior of the roast would have reached a temperature high enough to destroy bacteria, unless it is a rolled roast or one that has been mechanically tenderized. A consumer would not be able to determine if a roast that was pink in the center had reached the safe temperature of 145F without a food thermometer.

PORK

Pork roasts are safe when cooked to 160F even though the center of the roast may be somewhat pink. Pork chops may have just a trace of pink color at this temperature. Again, a consumer would not be able to determine visually if a pork roast that was pink in the center had reached a safe temperature.

GROUND MEAT AND POULTRY

Research indicates that the color of the meat and the color of the juices are not accurate indicators of doneness. Ground beef may turn brown before it has reached a temperature at which bacteria are destroyed. A consumer preparing hamburger patties and depending on visual signs to determine safety by using the brown color as an indicator is taking a chance that pathogenic microorganisms may survive. A hamburger cooked to 160F, measured with a food thermometer throughout the patty, is safe – regardless of color.

COMBINATION DISHES

Casseroles and other combination dishes must be cooked to 165F as measured with a food thermometer. These dishes are traditionally composed of cooked foods and then heated to combine flavors. Pathogenic bacteria could survive, however, if the meat or poultry component of a casserole was merely "browned" and the casserole was not subsequently heated thoroughly, especially if the dish was assembled in advance and refrigerated. These dishes display no visible signs of doneness. The visual descriptor "until hot and steamy" is difficult to verify. Only by using a food thermometer could a consumer be sure it had been heated to a safe temperature.

NO MORE GUESSWORK

Using an accurate food thermometer takes the guesswork out of cooking. No more cutting into your turkey or beef roast to see if it looks done. Simply place the food thermometer into the food and it will indicate the temperature the food has reached. You'll know if it needs to cook a few minutes more or if it is finished. This is especially helpful with combination dishes such as lasagne or egg casseroles that may brown on the top before they heat through.

By using a food thermometer on a regular basis, consumers can be assured that the food they cook is "done" as well as safe.

For additional food safety information about meat, poultry, or egg products, call the toll-free USDA Meat and Poultry Hotline at 1-888-MPHotline (1-888-674-6854); for the hearing-impaired (TTY) 1-800-256-7072. The Hotline is staffed by food safety experts weekdays from 10 a.m. to 4 p.m. Eastern time Food safety recordings can be heard 24 hours a day using a touch-tone phone.

Source: USDA


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