Cold holding temperature: the 41°F rule and what to do when a unit reads high

Cold TCS food must be held at 41°F (5°C) or below under the FDA Food Code. That covers raw and cooked meat, poultry and fish, dairy, cut melon, cut tomatoes, cut leafy greens, cooked rice and pasta, and most prepared salads. If a cooler or cold well reads above 41°F, move the food to a working unit, find out how long it was warm, and throw it away if you cannot show it was short. Then fix the unit and write down what you did.

Cold holding is the most cited temperature item in restaurant inspections. This guide covers what it applies to, how to measure it correctly, why readings creep up, a response plan, and the log entries. Free sheets are on the logs page.

What cold holding covers

The Food Code limit applies to TCS food: time/temperature control for safety food that supports bacterial growth if kept warm [1]. In a restaurant this means:

Raw meat, poultry, fish and shellfish.
Dairy: milk, cream, soft cheese, cut cheese, yogurt and sauces made with them.
Eggs once cracked and mixed, and egg salad, mayonnaise-based salads.
Cooked rice, pasta, potatoes, beans and vegetables held cold.
Cut produce: cut leafy greens, cut tomatoes and cut melons (cantaloupe, watermelon, honeydew) [1].
Sliced deli meats and sandwiches with them.
Soups, sauces and cooked meats being cooled or stored.

Whole, uncut produce is not TCS food and does not need the limit. Once you cut a melon or chop lettuce it does. That surprises people, and it is why searches for "cold holding temperature for cut cantaloupe" and "for shredded lettuce" exist.

Raw shell eggs have their own rule in the Food Code for receiving and storing; in the 2022 edition the target is 41°F as well, but check your local code. Frozen food should arrive and stay frozen hard.

The 41°F rule and the older 45°F number

Older codes allowed 45°F for cold holding. The FDA Food Code uses 41°F (5°C), and it has for a long time; New York City also uses 41°F [2]. Some states have kept a transition period or special rules for old equipment, but 41°F is the number to aim at, on the food and not only on the dial.

Why 41°F? Below it, the growth of the bacteria that make people sick slows to a crawl. Above it, growth speeds up fast the warmer the food gets. Listeria can grow even in the fridge, slowly, which is why date marking matters too: ready-to-eat TCS food held more than 24 hours at 41°F or below must be marked with a discard date no more than 7 days after it was made or opened, counting that day as day 1 [1].

How to check a cooler or cold well

Put a thermometer in each unit, away from the door and the fan, in a cup of water or on a shelf in the middle. Use a calibrated one.
Read the unit thermometer at opening, midday and close. Write it on the log.
Probe the food, not only the air: a pan of sliced turkey in the middle of a cold well can be warmer than the air around it. Put the probe in the middle of the product.
For a cold well or prep rail, probe the top-layer item, at the back and at the front.
When you receive deliveries, probe a case before you put it away. Refuse cold food that arrives above 41°F.

Dials lie. A cooler can show 38°F with a probe in a pan of milk reading 46°F because the dial sits in the air near the evaporator. If the two differ, trust the food probe and investigate the unit.

Why readings creep up: the usual causes

Work through them in this order, which goes from the cheapest to fix to the dearest.

Door open too long or left ajar. A bent gasket or a door that does not latch lets warm air in all day.
Overfilled shelves. Cold air needs room to circulate. Stacks of boxes against the fan block it.
Warm food put in. A hot stockpot or a warm delivery raises the unit for hours. Cool food first in shallow pans or an ice bath.
Prep rail pans over the fill line. Cold wells are designed to hold food below the rim of the well. Pans piled above it sit in room air. Keep the lid closed when you are not using the item.
Dirty condenser coils and blocked vents. Dust makes the compressor run longer and cool less. Cleaning the coil on a schedule is one of the cheapest repairs.
Defrost cycle or ice on the evaporator. Frost builds up and chokes airflow.
Thermostat set too warm, or a compressor on its way out. If cleaning, loading and the gasket are all fine and it still reads high, call repair.
Hot kitchen. A prep cooler next to a fryer works harder. Move it or fix ventilation if you can.

What to do when a unit reads above 41°F

Probe the food in the unit. If the food is above 41°F, treat it as out of range.
Move the food to a unit that is working, or into ice baths and coolers, within minutes.
Work out the time. How long has it been warm? If you have a log showing the last in-range reading, you can work out the longest it could have been out.
Decide. The Food Code's time rule is 4 hours at most, counting all the time out of temperature, and a common rule of thumb is to throw out anything you cannot show was warm for less than that [1]. Raw meat, fish and dairy that has been warm and cannot be accounted for: discard.
Fix the cause from the list above, or call repair. Put a sign on the unit so no one stocks it.
Write it down: reading, action, food discarded, repair call, time, initials.

The log entry makes the difference at inspection. An inspector who reads a high reading with a clear action treats it differently from one with no note. A sample row is in the temperature log sheet guide.

Cooling food to cold holding

Many cold holding failures start with cooling. Cooked food, such as soup, rice, a braise or chili, has to pass through the danger zone on its way down. The Food Code gives two stages: from 135°F to 70°F within two hours, then from 70°F to 41°F within four more hours, six in total [1]. Ways to do it:

Split the batch into shallow pans (the Food Code's guide is 4 inches deep or less; 2 inches cools faster).
Use an ice bath, ice wands or an ice-water sink, and stir.
Cut large meats into smaller pieces before cooling.
Do not put a deep, hot pot straight into the walk-in: it warms the whole unit and cools in the middle only after many hours.

Log the start time and temperature, the two-hour check and the six-hour check. If the 70°F mark is missed, reheat to 165°F and start again, or discard.

Cold holding in inspections

In New York City's public inspection data, code 02G covers cold TCS food held above the limit. For the 90-day window this stream looked at, 409 restaurants were cited for cold holding, nearly double the 207 for hot holding [3]. If you have had a citation, the best next step is a log that shows twice-daily checks and an action beside any high reading, starting today. Hot food has its own limit; see the hot holding temperature guide. How the pieces fit together in a written plan is in the HACCP plan guide.

Questions

What is the cold holding temperature for food?

41°F (5°C) or below.

Is 45°F okay for a cold well?

No. Old rules allowed 45°F, but current Food Code and NYC use 41°F. At 45°F, expect a citation.

What is the cold holding temperature for cut cantaloupe or watermelon?

41°F or below. Cut melon is TCS food. Whole melon is not.

What is the cold holding temperature for pasta salad or shredded lettuce?

41°F or below for both. Cut leafy greens and prepared salads with cooked ingredients are TCS food.

How often should I check my walk-in cooler?

At opening and closing at least, and once in the middle of a long day. Write each check on the log.

What do I do if the walk-in dies overnight?

Probe the food first. If the core of the food is above 41°F and you cannot show it was warm less than four hours, throw it out. Move whatever is still cold to a working unit, call repair, and write it all down.

Does the 41°F rule apply to ice cream or frozen food?

No. Frozen food should be hard and stay frozen; its limit is the freezer's own, commonly 0°F.

Sources

Related: all food safety guides.