A prep cook removes a pork roast from the freezer at 10 ?a.m. ?and places it on the
counter to thaw. By 7 ?p.m., ?the roast is cool to the touch, but it appears that the
center is still frozen. The prep cook should
A. ?place the pork roast in the sink under running water at 70 \deg F (21 \deg C ) ?or lower.
B. ?finish thawing the pork roast in the microwave and then cook it immediately afterward.
C. ?throw out the pork roast because the roast was not thawed correctly.
D. ?place the roast in an oven at 350 \deg F (177 \deg C ) ?and cook it to a minimum internal
temperature of 145 \deg F (63 \deg C ).
The Correct Answer and Explanation is:
Correct Answer: C. Throw out the pork roast because the roast was not thawed correctly.
Explanation:
Proper thawing of food, especially potentially hazardous items like pork, is critical to prevent the growth of harmful bacteria. The United States Department of Agriculture (USDA) and Food and Drug Administration (FDA) have established safe thawing methods to prevent foodborne illnesses. According to these guidelines, thawing meat on the counter at room temperature — as the prep cook did — is unsafe and unacceptable.
Here’s why: Bacteria multiply rapidly between 40°F and 140°F (4°C to 60°C), a range known as the “danger zone.” When the pork roast was left on the counter from 10 a.m. to 7 p.m. (9 hours), the surface of the meat likely entered and stayed within this temperature range for several hours, allowing harmful bacteria such as Salmonella and E. coli to grow. Even though the center is still frozen and the roast is cool to the touch, the outer layers were likely at unsafe temperatures for an extended period.
Once meat enters the danger zone for more than 2 hours, it should be discarded immediately. Cooking the roast now (as suggested in option D) would not make it safe, because toxins produced by some bacteria are not destroyed by heat.
Let’s evaluate the other options briefly:
- Option A (thawing under running water at 70°F or lower) is a safe method only if the roast hadn’t already been left out unsafely for hours. In this case, the damage is already done.
- Option B (microwave thawing and immediate cooking) is also a safe method—but only if started when the food was still safely stored (i.e., still frozen or refrigerated). It’s too late for that now.
Therefore, the correct and safest course of action is to discard the pork roast, as stated in Option C. Food safety must always prioritize preventing illness over salvaging food.