The FSA's Safer Food Better Business guidance says to check fridges and chilled display equipment at least once a day, starting with the opening checks. Twice daily is not a UK-wide legal minimum. Your own food safety system may require more frequent checks based on the food, equipment and risk.
Lemon uses an AM and PM workflow and we recommend it as a practical way to spot failures earlier, especially across a busy service. That is our operational recommendation, not a frequency set by law or by every inspector.
What the FSA guidance says
There is no UK-wide rule that orders every food business to take two fridge readings a day. Food businesses must run food safety controls based on HACCP principles and follow the monitoring written into their own system.
For caterers in England and Wales, the FSA's official SFBB chilled storage and display guidance says fridges and chilled display equipment should be checked at least once a day, starting with opening checks. Northern Ireland uses Safe Catering and Scotland uses CookSafe, so businesses there should follow the relevant pack and the procedure they have documented.
“At least” matters. Daily is the official starting point, not a ceiling. A kitchen may schedule another check after service, during a heatwave, after maintenance or when a unit has a history of drifting.
Why some kitchens add a second check
A fridge can fail in any number of ways: a compressor that quietly stops overnight, a door that gets left ajar at the end of service, a thermostat that drifts, a defrost cycle that does not complete. A single reading at 8 AM cannot reveal a failure that starts during lunch service.
A later check is useful because it tells you whether the unit was holding temperature through the busiest part of your day, when the door was opening every minute. It shortens the gap between a failure and the action your team takes.
That is why Lemon recommends a later check as well as the opening check. Some kitchens need more checks, while others may justify a different method in their food safety system.
How Lemon handles AM and PM
In a Lemon log, the day is split at noon. Anything before is the AM reading; anything after is the PM. If you take a reading at 11:45 it counts as AM, even if you are an hour late. If you take it at 12:15 it counts as PM, even if it was meant to be the morning check.
The noon split belongs to Lemon's workflow. It is not a regulatory boundary. It keeps opening and later checks separate so a manager can see which part of the kitchen's chosen routine is still incomplete. Two readings close together give less useful coverage than checks separated across the trading day.
Who should be doing it
The reading itself takes 10 seconds. The systems question is who is accountable.
Assign the check to a role on each shift, not to one named person who may be off. For Lemon's recommended routine:
- AM reading: the chef opening the kitchen. First job, before mise.
- PM reading: the chef or KP closing the kitchen. Last job, before the lights go off.
The mistake to avoid is making it the head chef's job. The head chef is not always there, and the moment they are not, the readings stop. Make it positional, not personal.
Each entry should be attributable to the person who took it, by name. Named, timed entries help the business show who completed the monitoring and when. A list of numbers with no author is much weaker evidence.
What the timestamp is actually for
Here is the part most kitchens miss. The temperature on the page is not the most important piece of information. The time the reading was taken is.
A page of perfect 4 °C readings, all written in the same biro after the stated dates, does not show that the checks happened at the required times. Retrospective entries can undermine the credibility of the record and the business's confidence in management evidence.
A credible record shows that the reading was taken at the moment the timestamp says it was. Useful record types include:
- A digital system that timestamps automatically at entry. This is what a phone-based app does. The reading goes in at 7:42 AM, and 7:42 AM is what is recorded. In Lemon, the audit entry cannot be backdated or edited after saving.
- A paper diary completed at the time. Add the name of the person taking the reading and write down any problem and action while the details are current.
- A wall-mounted thermometer with a printout function. Reliable for the temperature, but the printout does not tell anyone whether a human looked at it.
A retrospective entry cannot prove the fridge was checked at the intended time. Record a missed check honestly, then take the next available reading and deal with any problem found.
What happens if you miss one
If a scheduled check is missed, do not invent a reading or time later. Preserve what actually happened.
The right response is:
- Mark it as missed, dated honestly.
- Take the next available reading as soon as you can.
- If anything is out of range, follow your corrective action procedure (move stock, throw at-risk product, isolate or dispose of food under your procedure, and arrange repair where needed).
- Note in your records what you did about it.
An honest note preserves the facts and shows what the business did next. An invented reading cannot evidence a due-diligence claim under the Food Safety Act 1990. The wider records involved are covered in our piece on UK fridge temperature law.
A working routine for a busy kitchen
Start with the at-least-daily opening check in the FSA guidance, then use the risk assessment and method in your food safety system to decide whether you need more. Lemon's own recommendation is:
- AM, on opening: every fridge, every freezer, hot hold (if it is running through breakfast). Probe reading, not just the door display, where the unit allows.
- PM, at close: the same units, including the hot hold being switched off. Confirm everything is back in range.
- During service, on a busy day: spot checks on the unit you have been opening most. A prep fridge that has been opened 200 times during lunch is the one to keep an eye on.
Keep the routine short enough to survive a busy shift, but do not reduce a higher monitoring frequency set by your own plan.
How to make it stick
The honest answer is that this is one of those things that is easy in theory and quietly impossible in practice with paper. The diary lives in the office, the chef is in the walk-in, and the closing team is exhausted. Three weeks in, the PM checks start sliding.
A phone-based system fixes most of this because the diary is in your pocket. Lemon is the one we make: AM and PM readings for every unit, automatic timestamps, named entries, out-of-range values that open a tracked corrective action, and a one-tap PDF export when the inspector asks. Around 900 UK kitchens use it, and they have recorded over 400,000 food safety checks between them. Trial is 14 days, no card.
