The Church Kitchen Potluck
A volunteer coordinator at a community center runs a Saturday potluck for 60 guests. At 9:00 a.m., a helper drops off two trays of baked ziti that were cooked Friday evening and left on a counter overnight, covered, at room temperature. The coordinator also notices that a volunteer who has been sneezing and wiping her nose with a tissue is now arranging rolls on a platter with bare hands. A third volunteer says the refrigerator's thermometer reads 46°F (8°C) and that it has read that way since Thursday. The potluck serving begins at noon, and the coordinator has one working sink, no sanitizer test strips, and no calibrated probe thermometer on site. The coordinator must decide what can be served, what must be discarded, and how to proceed with limited equipment.
1. How should the coordinator handle the two trays of baked ziti that sat out overnight, and what is the food-safety reasoning?
Read the worked answer
The ziti must be discarded. Cooked food left at room temperature overnight has spent many hours in the temperature danger zone (41°F–135°F / 5°C–57°C), far beyond the 2-hour limit for food held without temperature control. Even though the trays were covered, coverings do not stop bacterial growth. Reheating cannot make the food safe, because some toxins formed by bacteria such as Staphylococcus aureus are heat-stable and survive reheating. The coordinator should not taste-test to judge safety; pathogens do not necessarily change taste, smell, or appearance. The correct action is to throw the food away and explain to the helper why overnight counter storage is unsafe. If the coordinator wants ziti at the event, it must be freshly cooked and held hot at 135°F or above, or cooled rapidly and reheated to 165°F before hot holding.
2. What should be done about the volunteer who is sneezing and handling bare-handed rolls, and how does the missing equipment affect the decision?
Read the worked answer
The volunteer should be moved away from food handling. A person with sneezing and nasal discharge can contaminate food through droplets and hand contact, and bare-hand contact with ready-to-eat food such as rolls is a direct contamination route. The coordinator should have the volunteer wash hands, then either assign non-food tasks or require gloves and a barrier such as tongs for the rolls. Because the site has no calibrated probe thermometer, the coordinator cannot verify that any hot food is at 135°F or above, so the safest plan is to keep hot items on a maintained heat source and limit the time food is out. Without sanitizer test strips, the coordinator cannot confirm sanitizer concentration; the sink should still be used to wash and rinse, and a sanitizing step should be done only if concentration can be verified, otherwise single-use gloves and pre-packaged items should be favored.
3. The refrigerator has read 46°F since Thursday. What should the coordinator do with its contents, and what follow-up is needed?
Read the worked answer
The refrigerator is running above 41°F, so it is not safely holding cold food. The coordinator should not assume the food is fine. Any potentially hazardous food in that refrigerator that has been above 41°F for more than 4 hours should be discarded, including dairy, cooked leftovers, cut produce, and meats. If the coordinator can determine that the unit was above 41°F for a shorter period, the food may be used only if it was kept at or below 41°F and the time-temperature history is known. Because the reading has persisted since Thursday, the safe default is discard. The coordinator should then move remaining food to a working unit, document the temperatures, and arrange for repair or servicing. The unit should not be used for potentially hazardous food until it holds 41°F or below, verified with a working thermometer.