Meal prep guide: cook once, eat safely for days
Meal prep sounds serious, but it really means this: cook one pot and stop thinking about lunch for three days. What matters is how you cool and store it, so your lunches stay safe.
Information checked on 2026-09-30. General information, not medical advice. How we calculate
Who cooking ahead suits
Anyone who’s tired of the question “what am I eating today?” by evening. One big pot (soup, stew, porridge, bake) is lunch for several days, with less washing up and fewer impulse buys. If you’d like the easiest start, try soups: they keep well and reheat nicely.
How to start: 4 steps
- Pick a dish that keeps well. Soups, stews, bean and meat sauces, bakes. Delicate salads and crispy things don’t last a few days.
- Cook more portions. Multiply the recipe by 3 or 4, as many as you’ll eat in 2–3 days.
- Divide into boxes. One portion each, so you don’t reheat the whole pot every time.
- Write the date. On the lid or a sticker: when it was cooked. Memory lies.
How to store it safely
Official figures differ a little (some sources say 2 days, some up to 4), so here we stay on the cautious side:
- Cool it fast. Don’t leave a hot pot on the counter for more than about 2 hours. Split it into shallow containers so it cools quicker.
- Fridge: about 5 °C or colder. Keep food covered.
- Cooked food: usually 2–3 days.
- Rice and fish: stricter. Cool rice as fast as you can and eat it as soon as you can, ideally within a day. Eat fish dishes first. Freeze the day-three portion.
- Freezer (–18 °C). Frozen food stays safe for a long time, but quality drops. Date it and use it within a couple of months.
- Reheat until steaming hot all the way through (roughly 70 °C or more), not only on the surface. Stir so there are no cold spots.
If food smells or looks odd, don’t taste it, throw it away. But the reverse isn’t true either: food that looks normal isn’t guaranteed safe, so dates and temperatures matter more than your nose.
Allergies and family
If someone at home has an allergy, write what’s inside on the boxes and use separate utensils; there’s more in our allergy guide. For cooking for the whole household, see the family meal plan guide.
When to be extra careful
Food poisoning can be more dangerous for pregnant women, older people, small children and anyone with a weakened immune system. For them, stick to shorter storage times and reheat thoroughly. If you’re unsure about your own situation, ask your doctor.
Frequently asked questions
How long can cooked food stay in the fridge?
Sources differ a little: most say somewhere between 2 and 4 days. We stay on the careful side: 2–3 days, and rice or fish as soon as possible, ideally within a day or two. Freeze whatever you won’t get to.
Why is rice treated as risky?
Cooked rice can carry bacterial spores that multiply at room temperature and may produce toxins. So cool rice quickly, keep it in the fridge, eat it as soon as you can and reheat it until steaming hot.
Can I reheat food more than once?
It’s better not to. Only reheat what you’ll eat, and only once. Keep the rest in the fridge or freezer, unheated.
How should I defrost frozen food?
Best overnight in the fridge. Eat defrosted food within a day or two, and don’t refreeze it unless you’ve cooked or reheated it first.
Read next
- How to plan a week of meals – A simple system: a repeating frame, one shopping list and one cooking evening. No spreadsheets, no burnout.
- How to eat healthily on a budget – The cheapest sources of protein and fibre in our own food data, what to buy frozen, and how to stop throwing food away.
- Family meal plan: one menu for everyone at the table – How to cook one meal for the whole household: portions, allergies, picky eaters and child safety. No more two different dinners.