The 12-Gallon Stockpot: Cooling Failure in a Hospital Kitchen
A 180-bed hospital kitchen cooks 12 gallons (about 45 L) of chicken-and-rice soup. Cooking ends at 2:00 p.m., and the pot is carried straight into a 38°F walk-in cooler, covered with a tight lid, in the same 14-inch-deep stainless stockpot. At 4:00 p.m. the food handler probes the center: 96°F. He says the cooler is running cold, so the soup will catch up overnight, and the pot is needed for tomorrow's noon meal. The walk-in has about 4 square feet of free shelf space and one empty speed rack. The kitchen has an ice machine, a full supply of 4-inch hotel pans, and a blast chiller that is broken. The manager must decide by 6:00 p.m. whether to keep or discard the soup, and how tomorrow's batch should be handled.
1. Using FDA Food Code cooling parameters, evaluate whether the soup has been cooled safely and state the decision on this batch.
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The cooling standard has two stages: 135°F to 70°F within 2 hours, then 70°F to 41°F within 4 more hours, 6 hours total. Cooking ended at 2:00 and the pot was probed at 4:00 at 96°F, so the first stage was missed by 26°F. That is not a paperwork problem. Between roughly 120°F and 70°F, Clostridium perfringens and Bacillus cereus (the rice) multiply fastest, and the toxins they form are heat-stable, so reheating to 165°F tomorrow would not make the soup safe. The expected decision is discard, not cool it longer. Record the discard, the temperature, the time, and the reason, then fix the method before the next batch. A covered 14-inch stockpot in a cooler insulates itself; the lid and the depth guaranteed failure.
2. Describe a cooling method that will reliably meet the two-stage standard for the next 12-gallon batch using only the equipment on hand.
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Use the ice machine, the hotel pans and the speed rack. Ladle the soup into pans no more than 2 inches deep, set them in an ice-water bath on the speed rack, and stir with an ice paddle every 10 to 15 minutes until the center reads 70°F, which should take under an hour. Then transfer the pans uncovered to the walk-in shelves with 2 inches of air space between them so cold air circulates, and finish to 41°F within the remaining time. Do not stack warm pans or cover them before they reach 41°F. Record time and temperature every 30 minutes on a cooling log. The 4 square feet of shelf space is enough for 12 gallons in shallow pans: depth, not total volume, was the problem.
3. What should the cooling log contain, and what should the corrective-action entry for this batch say?
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Entries: batch identity, date, time and temperature at the end of cooking, time and temperature at the 2-hour checkpoint, time and temperature at the 6-hour endpoint, initials, and a corrective-action column. For this batch the corrective entry should read: first-stage target missed (96°F at 2 hours), product discarded at 6:15 p.m., staff briefed on the shallow-pan and ice-bath method, procedure revised. Keep the log with the establishment's active managerial control records. The log is only useful if the person in charge reviews and signs it each shift; that signature is also the evidence that the corrective action was actually carried out.