Temperature Logs in Food Service: Clear, Actionable Information
Hygiene & Compliance · September 26, 2025 · By Alex Dondelinger · 3 min read
In France, "hygiene" compliance rests on the Hygiene Package / HACCP (EU food hygiene rules) and on your Plan de Maîtrise Sanitaire (PMS, the food safety management plan). In practice, during an inspection you are asked for proof: written procedures, temperature logs that are kept up to date and signed, documented corrective actions, control of the cold/hot chain, HACCP training, and so on. The authorities specifically stress: permanent monitoring of fridges and walk-in fridges, holding at ≥ 63 °C for cooking/service, and rapid cooling before returning to cold storage.
Threshold Memo (to Post in the Kitchen)
| Category / Operation | Target temperature |
|---|
| Ground meat (chilled) | ≤ +2 °C |
| Fresh fishery products | ≤ +2 °C |
| PCEA (préparations culinaires élaborées à l’avance, i.e. advance-prepared culinary preparations) | ≤ +3 °C |
| Other highly perishable items (e.g. poultry) | ≤ +4 °C (per GBPH) |
| Other perishables | ≤ +8 °C |
| Deep-frozen / frozen | ≤ −18 °C (usual tolerance ± 2 °C) |
| Rapid cooling | +63 °C → < +10 °C in ≤ 2h |
| Reheating | +10 °C → ≥ +63 °C in < 1h |
| Hot holding | ≥ +63 °C |
Practical note: some good practice guides (GBPH, guides de bonnes pratiques d’hygiène) specify targets and tolerances by sector. Rely on your reference GBPH to settle special cases.
How to Take Temperature Readings Correctly (Where, When, How)
For a reading to "hold up" in an audit, it must be reproducible and representative.
- Where to measure?
- Air inside the unit: a stable spot, away from doors and evaporators (avoids falsely low readings).
- Core temperature: for cooling, reheating and holding, disinfect the probe and wait for the reading to stabilize before writing it down.
- When?
- Morning and evening for each piece of equipment (fridge, walk-in fridge, blast freezer, display case),
- On delivery, after a breakdown or power cut, during cooling and reheating, during controlled thawing (in positive cold). These are the frequencies commonly recommended in HACCP training and validated in the field.
Traceability: A Simple (but Complete) Log
Each line must include: date/time, equipment/batch, value (°C), name/signature, and a corrective action if there is a deviation.
The monthly template below reflects industry practice (morning/evening, "deviation" box, action, signature). It is exactly the kind of sheet an inspector likes to find (or its digital equivalent).
Template for a "Monthly readings – Cold" sheet: Date | Equipment | Morning (°C) | Evening (°C) | Deviation? | Corrective action | Signature
Archiving: keep 3 to 6 months available on site and the history at head office (multi-site). This is a recommended practice, useful in case of a surprise inspection.
Callout: 3 Mistakes That Hurt (a Lot) During an Inspection
- No corrective action after a deviation ("we saw it, but we didn't write anything down").
- Core probes that aren't disinfected (or readings taken "on the fly" without letting them stabilize).
- Overloaded units that block air circulation → fluctuations and repeated deviations.
Key takeaway: these points come up systematically during visits. Document, correct, and prove it.
What to Do in Case of a Deviation? (Quick Action Grid)
🧊 Refrigerated Unit Out of Range
- Product at 6–7 °C → use immediately.
- ≤ 5 °C → transfer to a compliant unit.
- > 10 °C → discard (precautionary principle). 👉 Log the event and the root cause: door left open? faulty seal? overloading?
❄️ Frozen Product Above –18 °C
- Apply the tolerance (± 2 °C) with caution.
- Step up monitoring (more frequent readings).
- Check maintenance and defrosting of the equipment.
⚙️ Automating = Making It Reliable (Sensors, Alarms, Compliance)
Switching to connected sensors eliminates many uncertainties:
- Automatic, timestamped readings
- Real-time alerts (calls/SMS/push) in case of an excursion
- Centralized history, exportable in one click
🎯 Choose compliant equipment: EN 12830 (recorders), EN 13486 (verification/calibration) and document calibration in your PMS.
Good to know: even though it isn't mandatory, keeping a 3–6 month history ready for audit is an excellent practice (and saves you from hunting for loose sheets).
🥣 Special Cases (Hot/cold Links, Buffets, Takeout)
- Hot holding: hold at ≥ 63 °C until service (hot link, buffets). Any exception must be justified by the HACCP plan (temperature/duration/flow).
- Cooling: move quickly through the danger zone (+63 → < +10 °C in ≤ 2h), then return to cold storage. Log the time and the core temperature.
- Thawing: do it in a refrigerated unit (~ +3 °C), never at room temperature (except for immediate use in the microwave).
HACCP Partner Solutions
Fullsoon = forecasting & stock. For daily HACCP compliance:
HACCP & Traceability
- Traceability, temperature logs, cleaning plans, use-by date labeling.
- iOS/Android apps + web, suited to multi-site operations.
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HACCP & use-by dates
- Temperature logs, traceability (batch/best-before date), secondary use-by date.
- No commitment, iOS/Android, network/franchise management.
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Complementary roles: Fullsoon adjusts your purchasing & production; these solutions handle hygiene/traceability.