An employee has cooled a pan of mashed potatoes from 135°F to 68°F in two hours. How much time does she have left to cool the mashed potatoes to 41°F?

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Multiple Choice

An employee has cooled a pan of mashed potatoes from 135°F to 68°F in two hours. How much time does she have left to cool the mashed potatoes to 41°F?

Explanation:
Cooling foods safely uses a two-stage time guideline: get from 135°F down to 70°F within 2 hours, then from 70°F down to 41°F within the next 4 hours, for a total of 6 hours. In this case, the potatoes reached 68°F in 2 hours, which already meets the first stage by dropping below 70°F within the 2-hour limit. That means you’ve completed the first part and have 4 hours left to reach 41°F. Since the overall cooling window is 6 hours, with 2 hours already elapsed, the remaining time is four hours.

Cooling foods safely uses a two-stage time guideline: get from 135°F down to 70°F within 2 hours, then from 70°F down to 41°F within the next 4 hours, for a total of 6 hours. In this case, the potatoes reached 68°F in 2 hours, which already meets the first stage by dropping below 70°F within the 2-hour limit. That means you’ve completed the first part and have 4 hours left to reach 41°F. Since the overall cooling window is 6 hours, with 2 hours already elapsed, the remaining time is four hours.

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