How to Store and Reheat Leftovers Safely

Cool cooked food quickly, get it into the fridge, eat it within the window below or freeze it, and reheat it until it is steaming hot all the way through, once only. The official wording, with sources and the date we last checked them, is in the food safety guidance below.

For how long a specific dish keeps and how to reheat it: Leftover Storage Calculator

Most of the risk in leftovers happens on the worktop, not in the fridge. The job is to get food out of the warm range quickly, and a large pan of stew or a whole carcass of chicken left on the hob cools remarkably slowly.

Practical ways to speed it up: divide it into shallow containers rather than one deep one, take meat off the bone, spread rice or pasta out rather than leaving it heaped, and stand a pan in a sink of cold water while you clear up. Do not put a steaming hot dish straight into the fridge in a sealed lid. It warms everything around it.

The general rule is short (a couple of days) and some foods are shorter still. Rice is the clearest example and has its own guidance, which is set out below rather than paraphrased here.

Where a dish sits within that depends on what it is, so check the specific food: Leftover Storage Calculator. Label containers with the date, after two days in an opaque box, nobody remembers.

If you already know you will not eat it in time, freeze it on the day you cook it rather than on day two. Portion it into single meals, leave a little headroom for expansion, and label it with what it is and the date.

The months given for frozen food are about how good it will be, not a safety cliff, the guidance below states this plainly.

For how long each food keeps at its best in the freezer: Freezer Storage Calculator

Steaming hot throughout is the target, not merely warm, and the middle is what counts, not the edges. In a microwave, stir or turn the food part way through and let it stand briefly, because microwaves heat unevenly and cold spots are the whole problem.

Microwave power varies a lot between machines, so a time from a recipe or a packet may be wrong for yours: Microwave Wattage Converter.

Reheat only the portion you are going to eat. Reheating the whole dish and putting it back is what leads to reheating twice.

Cooked rice needs cooling faster than other leftovers and keeps for a shorter time. It is worth cooking the amount you need rather than a large batch: Rice Cooking Calculator and Rice Per Person. The specific guidance is below.

Leaving the roast out all afternoon. Carve what you need, then cool and chill the rest straight away.

One big deep container. Shallow containers cool far faster.

Reheating the whole dish repeatedly. Take out a portion instead.

Warm rather than steaming hot. Warm is the condition to avoid, not the target.