A short tutorial

Temperature logs and inspections

By Vimal Bhaya, Founder and Lead Systems Architect · Last reviewed 21 October 2026

An inspector reads a temperature log for one thing: whether the numbers were really taken. A log filled in later, or copied from the form, works against you once it is spotted.

This tutorial starts with pencil whipping. That is the trade's name for writing down readings nobody took. It reads one whole Sunday of a real kitchen's log the way a handwriting examiner would, then shows why staff do it and how to stop it.

Start with this article

By the end you will be able to spot a faked log and explain why it happens. You will also know how to change the checks so the numbers on your sheets are real.

  1. Pencil whipping: why temperature logs get faked

    One whole Sunday of a real kitchen's paper log, read the way a handwriting examiner would. Every row written left to right, a cooler at 36.4°F (2.4°C) at five checks out of six, and six signs of a faked log.

    Read the article

How to use this

The article is a full answer to one question. Every source is linked at the end.

Common questions

What is pencil whipping?

Writing down checks that were never done. On a temperature log it means filling in a whole day at once, writing a safe number instead of the real one, or copying the target printed on the form.

It leaves signs you can see, and the article in this tutorial shows them on one whole Sunday of a real kitchen's log.

What do inspectors look for in a temperature log?

Whether the readings were really taken: entries at the right times, numbers that move the way a real box moves, and an action written next to anything out of range.

A log filled in ahead of time, or full of the same number, tells them it was not.

Does a temperature monitor help at an inspection?

It gives the inspector a full record instead of a few hand-written numbers. TemperatureWise records each box at least every 15 minutes and keeps the record indefinitely, as an audit trail for HACCP, BRC and SQF.

Your health department may still want some hand checks, so ask which ones the record can replace.

Who is this tutorial for?

Owners, kitchen managers and food safety leads who sign off temperature logs, and anyone getting ready for an inspection or an audit.

It assumes no training in food safety rules. Each rule is quoted and linked where it comes up.

Related

Want readings nobody has to make up

TemperatureWise records every cooler and freezer at least every 15 minutes, day and night, and keeps the record indefinitely. Nothing to fill in at the end of a shift.

Talk with us

Vimal Bhaya, Founder and Lead Systems Architect, Renergy Technologies.
He spent about a decade designing the analog circuits inside enterprise server chips at Oracle, from high-speed data links to DDR4 memory systems. He now designs the sensors and the detection models behind TemperatureWise.
Sources

Last reviewed 21 October 2026.