How to Store Vegetables and Fruit for as Long as Possible

Half of household food waste happens in the fridge, not at the table. Vegetables thrown out after two days could usually have lasted a week — they were simply stored wrongly.

Rule one: moisture is the enemy

Most people wash produce and put it in the fridge wet, and that water greatly accelerates rot and wilting.

The right way: wash at the point of use, not the point of storage. And if you must wash in advance, dry thoroughly with a towel or a salad spinner before storing.

Leafy things especially (lettuce, rocket, parsley, coriander): wrap them in kitchen paper inside a loosely closed bag. The paper absorbs excess moisture and the loose bag allows ventilation — and together they give 5 to 7 days rather than two.

Rule two: ethylene gas

Some fruit releases ethylene gas as it ripens, and that gas accelerates the ripening — and then the spoiling — of anything nearby.

The heaviest producers: bananas, apples, avocados, tomatoes, melons, peaches and mangoes.

The most affected: leafy greens, cucumber, broccoli, carrots and potatoes.

So a single banana next to a bag of lettuce halves its life. Separate them — and if you want to ripen an avocado quickly, put it in a bag with a banana and the gas will speed it along.

What should not go in the fridge

• Potatoes: cold converts their starch to sugar so they sweeten and darken when fried. A dry, dark, ventilated place.
• Onions and garlic: they rot in humidity. A dry ventilated place, away from potatoes.
• Tomatoes: the fridge halts their ripening and turns their texture mealy. Room temperature.
• Bananas: their skin blackens in the cold. Outside the fridge until ripe.
• Bread: the fridge stales it faster than room temperature. The freezer or the counter.

Onions and potatoes: enemies

This rule is often forgotten: onions and potatoes must not be stored together. Onions release gases and moisture that make potatoes sprout and rot quickly.

Each on its own in a dry ventilated place keeps for months — together they last weeks at best.

Fresh herbs

The best method for mint, parsley, coriander and basil: stand the stems in a glass of water like flowers, cover the leaves with a bag, and put them in the fridge (basil outside the fridge — the cold blackens it).

They keep two weeks that way instead of three days in an ordinary bag. Change the water every two days.

And for longer storage: chop them and freeze them in ice-cube trays with olive oil. The cube goes straight into the dish and its flavour is far closer to fresh than dried.

Fruit: ripening before chilling

Most fruit ripens only at room temperature and does not continue ripening in the fridge. So the rule is: leave it out until ripe, then chill it to stop the ripening.

That applies to avocados, mangoes, peaches, pears and melons. Berries and grapes go straight into the fridge because they do not ripen after picking.

The real signs of spoilage

Not every change in appearance means spoilage. Slightly wilted vegetables are still perfectly good for cooking (not for salad), and limp carrots turn crisp again after an hour in iced water.

But what genuinely goes in the bin: any mould (even in a small patch — the roots have spread), a sour or sharp smell, and sliminess on the surface.

Freezing: an extension, not a substitute

Freezing stops spoilage but does not restore quality. So the rule is: freeze while it is at its best, not when it is about to turn.

And most vegetables need a quick blanch before freezing: two minutes in boiling water then straight into iced water. That blanch stops the enzymes that keep breaking the vegetable down even in the freezer — which is what keeps frozen beans green for a year instead of yellowing in two months.

The exceptions that freeze without blanching: bell peppers, chopped onion, herbs, and whole tomatoes.

And the freezing method matters: spread the pieces on a tray in the freezer for two hours until frozen separately, then transfer them to a bag. That way you take the amount you want instead of one solid block.

Approximate keeping times

• Leafy greens (wrapped in paper): 5-7 days in the fridge.
• Carrots, courgettes and cucumbers: one to two weeks in the drawer.
• Broccoli and cauliflower: 5 days, after which they develop a sulphurous smell.
• Onions, garlic and potatoes: one to three months outside the fridge in a dry place.
• Herbs in a glass of water: two weeks.
• Blanched frozen vegetables: 8 to 12 months.

Common storage mistakes

Packing the drawers full: air must circulate around produce. A crammed drawer traps moisture and ethylene together.

Fully sealed plastic bags: they trap condensation on the produce so it rots. The bag should be loosely closed or perforated.

Washing fruit before storing: water removes the natural waxy layer that protects it. Wash it as you eat it.

Arranging the fridge

A fridge is not uniformly cold. The top shelf is warmer, the bottom and back are colder, and the door is the warmest place in it.

So the door is for things that are not sensitive (drinks and sauces), the bottom shelf for meat, and the drawers for vegetables and fruit — each in its own drawer.