Can You Reheat Rice?
Written by Jordan Morley · Reviewed against FSA/NHS reheating guidance · Last updated 28 October 2026
Yes, you can reheat rice — but the storage rules matter more than the reheating: cool within 1 hour, fridge for no more than 24 hours, reheat once until piping hot.
What makes it safe (or not)
Uncooked rice can contain spores of Bacillus cereus bacteria. The spores survive cooking, and if cooked rice sits at room temperature they can germinate and produce a toxin (Food Standards Scotland). Reheating rice does not kill the bacteria, so reheating cannot rescue rice that was left out. That's why the danger with rice isn't the reheating itself, but how it was cooled and stored beforehand. Rice handled correctly from the moment it's cooked is safe to reheat.
You can also check the calorie content of rice alongside its safety information.
The 1 hour and 24 hour rule, and where it comes from
| Source | What it says |
|---|---|
| Food Standards Scotland | 'chill it as quickly as possible, ideally within 1 hour'; 'do not store it for longer than 24 hours before eating'; 'make sure it is steaming hot all the way through'; 'Never reheat rice more than once' |
| NHS Start4Life (modified 26 Jan 2026) | 'With rice, make sure it's cooled within 1 hour and then goes straight in the fridge or freezer'; 'eaten within 24 hours'; 'Never reheat rice more than once'. This is baby weaning advice |
| Healthline (22 Apr 2025) | Names 'sitting out at room temperature for more than 2 hours' as the risk condition and, citing the FSA, rice leftovers within 24 hours if cooled ideally within 1 hour |
The 2-hour figure on a rival is looser than the UK 1 hour. Use the UK 1 hour.
What goes wrong, and when you would notice
Uncooked rice can carry Bacillus cereus spores. Healthline says reheating does not kill the bacteria. It describes two forms: vomiting that typically begins 30 minutes to 6 hours after eating, and diarrhoea that usually begins 6 to 15 hours after, both typically resolving within 24 hours. Healthline is a general health site and its numbers have not been checked against a UK agency.
Decision table: can I reheat this rice?
| Situation | Answer |
|---|---|
| Cooled within an hour, in the fridge, cooked less than 24 hours ago | Yes: reheat once until steaming hot all the way through |
| Takeaway rice, in the fridge within an hour of arriving | Yes, if you eat it within 24 hours of cooking |
| Left on the counter or in the pan overnight | No. Throw it away (FSS: do not store it for longer than 24 hours; reheating does not kill the bacteria) |
| Reheated once already | No. Never reheat rice more than once |
| Eating it cold, such as rice salad | Fine if cooled quickly, kept in the fridge and eaten within 24 hours (FSS) |
If you already ate rice that sat out
The sources we read do not give a treatment threshold. Healthline describes symptoms usually clearing within 24 hours. If symptoms are severe or do not clear, get medical advice.
Sources checked
Everything in the sections above was checked against these pages on 28 October 2026.
- Food Standards Scotland: Rice (safe food storage) — chill within 1 hour; fridge no longer than 24 hours; steaming hot; never reheat more than once
- NHS Start4Life: Storing and reheating baby food (modified 26 January 2026) — rice cooled within 1 hour; 24 hours in fridge; never reheat more than once (baby advice)
- Healthline: Reheated rice syndrome (22 April 2025) — rival: symptom onset; reheating does not kill bacteria; 2-hour counter figure
Rice and rice-like dishes at a glance
| Dish | Chill within | Eat within |
|---|---|---|
| Plain rice | 1 hour | 24 hours |
| Egg fried rice | 1 hour | 24 hours |
| Chicken fried rice | 1 hour | 24 hours |
| Risotto | 1 hour | 24 hours |
| Paella | 1 hour | 24 hours |
| Rice pudding | 1 hour | 24 hours |
| Quinoa | 1 hour | 24 hours |
| Couscous | 1 hour | 24 hours |
These are the rice rules from NHS/FSA guidance; quinoa and couscous are included as a cautious extension, since they are cooked starchy grains too.
How to reheat rice safely
- Cool rice within 1 hour of cooking — spread it on a tray to speed this up.
- Refrigerate in a sealed container and eat within 24 hours (UK FSA guidance).
- Reheat straight from the fridge with a splash of water, stirring halfway.
- Check it is piping hot all the way through — 75°C (165°F).
- Eat immediately and never reheat it a second time.
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More kitchen essentials
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Check Price →Rice: the other answers on this site
| Question | Short answer (links to the full page) |
|---|---|
| In pregnancy | Safe |
| Left out overnight | No — definitely not (limit about 1 h) |
Common questions
Can you reheat rice?
Yes, if it was cooled within an hour, stored in the fridge for no more than 24 hours and reheated once until steaming hot all the way through (Food Standards Scotland; NHS Start4Life).
Can you reheat rice twice?
No. Food Standards Scotland and the NHS both say never reheat rice more than once.
How long does cooked rice last in the fridge?
No longer than 24 hours (Food Standards Scotland, NHS Start4Life).
Is it safe to eat cold rice?
Yes, if it was cooled quickly, kept in the fridge and eaten within 24 hours.
Does reheating rice kill the bacteria?
No. Healthline says reheating does not kill Bacillus cereus bacteria, which is why cooling and storage matter more than reheating.
How quickly do symptoms start?
Healthline gives 30 minutes to 6 hours for the vomiting form and 6 to 15 hours for the diarrhoea form, usually clearing within 24 hours.
Related answers
Primary source: FSA/NHS reheating guidance.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.