Temperature Monitoring & Cold Chain Log

Temperature monitoring system and cold chain documentation for food trucks, covering the critical gap between commissary refrigeration and limited mobile cold-holding capacity.

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What this document covers

Temperature control is the single most critical food safety issue for food trucks. Unlike restaurants with walk-in coolers and multiple refrigeration units, food trucks typically operate with one or two small reach-in coolers and limited hot-holding equipment. The cold chain from commissary to truck to service is the most vulnerable point — food travels in coolers, sits during truck setup, and must be maintained at safe temperatures through hours of outdoor service in variable weather conditions. Health inspectors consistently cite temperature violations as the #1 issue during food truck inspections. This document establishes your temperature monitoring protocols, cold chain procedures, equipment calibration schedule, and corrective actions — with practical log templates designed for the fast pace of mobile food service.

Key sections included

Cold-holding requirements (41°F / 5°C or below)
Hot-holding requirements (135°F / 57°C or above)
Commissary-to-truck transport temperature log
Cooking temperature verification
Equipment temperature monitoring schedule
Thermometer calibration procedures
Corrective actions for temperature excursions
Daily temperature log templates

Frequently asked questions

How often should I check temperatures during service?

Check refrigeration unit temperatures every 2 hours during operation. Verify cooking temperatures for every batch. Check hot-holding temperatures every 2 hours. During hot weather (above 90°F ambient), increase cold-holding checks to every hour.

What do I do if my cooler temperature rises above 41°F during service?

If food has been above 41°F for less than 2 hours, rapidly cool it back below 41°F. If above 41°F for 2-4 hours, use immediately (serve or cook). If above 41°F for more than 4 hours — or above 70°F for more than 2 hours — discard it. Document the corrective action.

Do I need a specific type of thermometer?

You need a probe thermometer accurate to ±2°F for checking food temperatures, and a hanging/mounted thermometer in each cooler and hot-holding unit. Digital instant-read thermometers are best for fast-paced food truck service. Calibrate daily using the ice-point method (32°F in ice water).

Document details

Legal basis: FDA Food Code 2022 §§3-501.16, 3-501.17, 3-501.19; 21 CFR 117.145 (monitoring); state and local health department regulations
Enforced by: U.S. Food and Drug Administration (FDA); state and local health departments
Penalty for absence: Critical violation on health inspection — can result in immediate truck shutdown. Fines of $250–$1,000 per violation. Repeated temperature violations lead to permit suspension or revocation. Foodborne illness linked to temperature abuse can result in lawsuits and criminal charges.
Category: Food Safety

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