Cold holding is one of the most-cited food-safety controls. These answers cover the temperature the FDA Food Code requires, the right set-point, and how to monitor it. Primary source: U.S. Food and Drug Administration.
Cold time/temperature control for safety (TCS) food must be held at 41 degrees F (5 degrees C) or below, per FDA Food Code 3-501.16. That is the food-temperature requirement, not necessarily the dial setting. To keep food at or below 41 degrees F reliably, most operators set the appliance thermostat a few degrees lower, often around 36 to 38 degrees F, so that door openings and restocking do not let the food warm past the limit. The controlling number is always the temperature of the food itself.
No, and confusing the two is a common mistake. A walk-in or reach-in set to 41 degrees F may still let food drift above 41 degrees F during busy service, defrost cycles, or heavy restocking. Because FDA Food Code 3-501.16 regulates the food temperature, aim the appliance lower than the legal limit to build in a safety buffer. Verify with a thermometer placed in the warmest zone or in a product simulator, not by reading the built-in dial, which reports air temperature and can lag.
Time/temperature control for safety foods, formerly called potentially hazardous foods, are the ones requiring cold holding under FDA Food Code 3-501.16. These include meat, poultry, seafood, dairy, cooked vegetables, cut leafy greens, cut tomatoes, cut melons, and cooked rice or pasta, among others. Shelf-stable and low-risk items do not require refrigeration. When in doubt, treat any food that supports rapid bacterial growth as TCS and hold it at 41 degrees F or below.
Check and record temperatures at least at the start of each shift, and many operations log them two to four times daily. Frequent monitoring catches equipment problems before food spends hours in the danger zone. Use a calibrated probe thermometer or a monitored built-in sensor, and keep a written or digital log. Continuous digital monitors with alarms are increasingly common because they alert staff to a failing unit overnight, when a manual check would not catch it until morning.
First check how long the food has been above 41 degrees F. Under FDA Food Code 3-501.16, TCS food held above the limit is a violation, and time in the temperature danger zone (above 41 degrees F up to 135 degrees F) is cumulative. If you can confirm the food was above 41 degrees F only briefly, move it to a working unit. If it was above the limit for an extended period or you cannot verify the timeline, discard it. Then diagnose the appliance before restocking.
No. The 41 degrees F cold-holding limit in FDA Food Code 3-501.16 applies to refrigerated TCS food, not frozen storage. Frozen food simply must remain frozen solid; the Food Code does not set a single numeric freezer temperature, though operators typically run freezers at or below 0 degrees F to keep product hard-frozen and maintain quality. If frozen food is thawing or shows large ice crystals and refreeze marks, treat it as a temperature-abuse problem and evaluate it before use.