Why rice needs care
Uncooked rice can contain spores of bacteria that survive cooking. If cooked rice is left standing at room temperature, they can multiply and produce toxins that cause food poisoning, and reheating doesn’t destroy those toxins.
What the NHS advises
NHS guidance says to eat rice as soon as possible after cooking, cool leftovers within 1 hour and keep them in the fridge, not to keep leftover rice for more than 1 day, and to make sure reheated rice is steaming hot all the way through (NHS food hygiene and safety advice).
In practice
- Spread leftovers in a shallow container so they cool quickly
- Refrigerate within the hour
- Eat the next day at the latest
- Reheat once only, until steaming hot
- Seafood leftovers need the same care, or more
Reheating well
Reheat leftover paella in a pan with a splash of water or stock, stirring gently, or in a microwave, covered, until it’s steaming hot all the way through. Don’t reheat it more than once.
Seafood leftovers
Seafood paella leftovers need the same quick cooling and refrigeration. If in doubt, throw it out.
At big events
Agree with your caterer beforehand what happens to leftovers. Many caterers won’t leave cooked rice behind because they can’t control how it’s stored.
Why this matters for rice in particular
Many foods carry some risk if left out, but rice is singled out in official advice because the spores can survive cooking. That’s why the guidance focuses on cooling quickly and refrigerating promptly, rather than just reheating thoroughly. Paella left in a warm pan for hours after a party should be thrown away, not saved.
If you’re hosting, assign someone to deal with leftovers promptly, so they don’t sit out while everyone carries on celebrating.
At events
Paella is best eaten as soon as it comes off the heat, which is one reason live cooking works so well. Ask your caterer about leftovers before the day.
Planning an event? Tell us about it and we’ll suggest a menu and send a quote.