Hot Holding Temperature Logger Uk

Direct answer: a UK caterer using a hot holding temperature logger should still follow the normal hot-holding safe method: prove food is kept at or above 63°C, probe the food itself rather than only the cabinet air, and keep notes for any corrective action. UK regulations state that hot-held food for service or display must not be kept below 63°C, and the Food Standards Agency's Safer Food, Better Business hot-holding method gives the same 63°C benchmark with a limited two-hour display exception.

What the logger is really proving

A logger is not a magic compliance pass. Its practical job is to close the gap between a quick spot check and what actually happened across lunch service, a buffet shift or a hot cupboard hold. A single check at 12:00 can look fine while a bain-marie tray dips at 13:20 after a refill, a lid is left open, or the water level falls. A timed record lets you see the dip, match it to a service event, and write the corrective action beside the graph.

The strongest evidence is normally a food-temperature record, not just air around the food. For trays, soups and sauces, choose a probe approach that can be cleaned, placed safely and checked without contaminating food. The FSA guidance specifically points food businesses to a disinfected probe as the way to prove hot food is being kept safely. That is the human-readable version of the technical requirement: measure the thing the customer will eat.

A practical service-period checklist

Preheat the bain-marie, hot cupboard or display unit before food goes in.
Disinfect probes and decide which food or tray each channel represents.
Put the probe where it records the food core or representative product temperature, not a convenient hot patch.
Start logging before service begins so the warm-up and first tray load are visible.
Mark refills, lid-open periods and staff handovers in the diary, then export the service-period CSV or graph.
If the curve drops below your safe limit, record what you did: reheat, chill, discard or shorten display time according to your procedure.

When timed logging helps more than handwriting

Handwritten diaries work when trained staff are present and checks are consistent. They struggle when a small team is busy, a buffet runs for hours, or nobody remembers whether the 13:30 check happened before or after a tray was topped up. A leave-in logger creates a time-stamped pattern that staff can compare with the diary instead of trying to reconstruct a shift from memory.

For small food businesses, the decision is less about replacing the diary and more about making the diary harder to miss. If your EHO asks how you know hot-held food stayed safe during service, a graph plus corrective-action notes is easier to explain than a perfect-looking sheet filled in at the end of the day.

When this is not enough

Do not rely on a basic logger alone if your contract requires accredited calibration paperwork, remote alerts for an unmanned site, or a formal HACCP system signed off by a consultant. It also will not decide your legal duties for you. Treat it as evidence that supports your safe method, not as a replacement for the safe method.

Useful next step

Run one ordinary service period as a prove-it trial. Keep your usual SFBB-style diary, log the food temperature at sensible intervals, and compare the curve with what staff wrote down. If the graph exposes mid-service dips or missed checks, fix the process before inspection pressure forces the issue.