Wedding pilau held overnight at ambient temperature
A caterer in Machakos is preparing for a 300-guest outdoor wedding. At 4:00 p.m. on Saturday, the team cooks 40 kg of pilau (rice with beef) in 12 large aluminium pots over charcoal. The pots are covered and left on trestles under a canvas tent. There is no hot-holding equipment and no refrigerator on site. By 11:00 p.m., the food is at 28°C. Two kitchen helpers have small cuts on their hands, covered with a single plaster each, and one has a discharging finger. The caterer plans to reheat all the pilau at 8:00 a.m. on Sunday, hold it in the same pots and serve at noon. A local food handler advises that reheating to 75°C will make it safe. The wedding has already paid a deposit and refuses to change the menu.
1. Identify the likely hazards and assess whether reheating to 75°C makes the pilau safe.
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The pilau has been at 28°C for about 16 hours (16:00 to 08:00) and will be reheated later. This is gross temperature abuse. Likely pathogens: Bacillus cereus from cooked rice, whose spores survive cooking and germinate at ambient temperature; Clostridium perfringens from meat and gravy in a slow-cooled bulk food; and Staphylococcus aureus from the helper's discharging finger if he handled the food after cooking. Reheating to 75°C kills vegetative bacteria but not B. cereus spores or heat-stable staphylococcal toxin. The local adviser is wrong: reheating does not make the pilau safe. The only safe decision is to discard all 40 kg. Do not taste to decide. Record the discard and inform the client.
2. What should the caterer do with the food and the two helpers, and how should the client be handled?
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Discard the pilau; do not serve it. Exclude the helper with the discharging finger from food handling until treated and cleared. Cover the other helper's cuts with waterproof dressings and change gloves. Tell the client plainly that the food was held outside safe temperatures overnight and cannot be served. Offer an alternative menu cooked fresh on site or a refund. Do not let the client pressure you into serving. If fresh food is cooked, use hot holding above 63°C, cool any leftovers rapidly in shallow pans, and keep raw and cooked food separate. Record the incident, the discard and the staff exclusion. Report the wound and illness issue through your food safety plan.
3. Set out a prevention plan for the next large outdoor event.
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For large events: cook in batches close to service; hot-hold above 63°C; if cooling, divide into shallow pans and cool from 63°C to 5°C within six hours, with the first stage to 21°C within two hours. Provide refrigeration or insulated boxes on site. Set up a handwash station with soap and running water. Exclude ill handlers and cover wounds with waterproof dressings and gloves. Use a trained supervisor, a written food safety plan and temperature logs. Reduce the menu or stagger cooking so food is not held for hours. Brief the client in advance that unsafe food will not be served. Keep contact details for the county public health officer.