Reheating Food Safely: 60C Rule Guide

Reheating pre-cooked food safely means getting it hot fast: to 60°C or above, rapidly, within two hours . The danger is not the final temperature so much as the journey. Every time cooked food passes slowly through the 5-60°C danger zone — first as it cools, then again as it reheats — any surviving bacteria get another chance to multiply and, in some cases, produce heat-stable toxins that reheating will not destroy. This guide sets out the reheating rules, the right equipment, how to verify, and the one-reheat principle for Australian commercial kitchens. What Temperature Must Reheated Food Reach? Under FSANZ Standard 3.2.2 , food that has been cooked and cooled and is going to be hot-held or served hot must be reheated so the entire portion reaches 60°C or above . Just as importantly, it must get there quickly — aim to move it through the danger zone within two hours. Reheating slowly, for example by trying to bring cold food up to temperature in a bain-marie, keeps the food in the ideal bacterial growth range for far too long and is a common cause of foodborne illness. How Should You Reheat Food Step by Step? Start with properly cooled food. Food should have been rapidly cooled from 60°C to 21°C within 2 hours and to 5°C within a further 4 hours before storage. Reheating cannot fix a bad cool. Reheat in small batches so heat penetrates quickly and evenly. Use direct, high heat that drives the food to 60°C or above within two hours. Probe the centre of the thickest part with a calibrated thermometer and confirm 60°C or above before service. Transfer to hot holding at 60°C or above once verified — hot holding maintains temperature, it must never be used to reheat. Which Equipment Is Right for Reheating? Combi oven or stovetop — best for fast, even reheating of most products. Microwave — suitable for small portions; stir or rotate halfway and stand briefly so heat distributes, because microwaves heat unevenly. Bain-marie — for holding hot food only. Never use it to bring cold food up to temperature. Slow cookers — not suitable for reheating high-risk food, as they heat too slowly through the danger zone. Why Probe the Centre? Heat reaches the edges of a portion first and the centre last, so a hot surface can hide a cool core where bacteria survive. Always probe the thickest part or geometric centre of the food, clean and sanitise the probe between checks, and record the reading. Automating this with digital temperature monitoring gives you a timestamped record at every service window and flags any check below 60°C. What Is the One-Reheat Rule? Best practice is to reheat food only once : reheat, serve, and discard what is not used. Each additional heat-and-cool cycle takes the food through the danger zone again and compounds the risk. If a reheat check comes back below 60°C or a batch is not served, deal with it through your corrective actions process and record the discard. Tracking discard through waste and expiry management also helps you portion better and cut waste. Reheating Is About Safety, Not Quality Reheating makes food safe; it does not restore the quality of freshly cooked food. For the best plate quality and lower risk, favour par-cooking and finishing to order over batch-cooking and repeated reheating. Where you do batch-cook, cool and reheat correctly and only once. Cool Correctly So You Can Reheat Safely Safe reheating starts with safe cooling, because you can only reheat food that was chilled properly in the first place. The two-stage cooling guidance under Standard 3.2.2 is a practical benchmark: cool food from 60°C to 21°C within 2 hours , then from 21°C to 5°C within a further 4 hours . Help the food cool quickly by dividing it into shallow containers, using ice baths or blast chillers, and not stacking hot containers. If food fails the cooling steps, it should be discarded rather than reheated — reheating cannot reverse bacterial growth or destroy heat-stable toxins that may already have formed. Which Foods Need the Most Care When Reheating? Rice and pasta — cooked rice can carry Bacillus cereus spores that survive cooking and produce toxin if the rice is left in the danger zone. Cool quickly and reheat only once to 60°C or above. Poultry and meat dishes, gravies and stocks — dense, liquid-rich foods reheat unevenly, so stir and probe the centre. Rolled or stuffed products — the core sits furthest from the heat, so allow extra time and always probe the middle. Large batches — break into smaller portions so heat penetrates fast enough to clear the danger zone within two hours. Record Every Reheat An EHO will often ask to see reheating and hot-holding records. Logging the reheat temperature and time at each service window proves your process worked and shows a pattern of control over months. Scheduling these checks through digital temperature monitoring removes the paperwork and timestamps every reading, while a below-target result flows straight into your corrective actions so nothing unsafe reaches a customer. Frequently Asked Questions What temperature should food be reheated to in Australia? Reheated potentially hazardous food must reach 60°C or above throughout, and should get there rapidly — ideally within two hours. Check the centre of the thickest part with a calibrated probe before serving or hot-holding. Can you reheat food more than once? The safe practice is to reheat food only once, then serve and discard any leftovers. Repeated reheating cycles pass the food through the 5-60°C danger zone again and increase the risk of bacterial growth and toxin formation. Can I reheat food in a bain-marie? No. A bain-marie is designed to hold already-hot food at 60°C or above. Using it to bring cold food up to temperature is too slow and holds the food in the danger zone. Reheat with direct heat such as a combi oven, stovetop or microwave, then transfer to the bain-marie. How quickly must food be reheated? Aim to reheat food to 60°C or above within two hours so it spends a