How to reduce food waste at home

Every bag of food that goes in the bin also wastes all the water, energy and land it took to grow it. The good news: most food waste is preventable with a few consistent habits — and you'll notice the difference in your wallet straight away.

Why food waste matters

The UN Food and Agriculture Organization estimates that roughly one third of all food produced for human consumption is lost or wasted globally. When food ends up in landfill it generates methane, a potent greenhouse gas. On top of that, producing food uses enormous amounts of water, land and energy — all of it wasted when the food is thrown away.

For households, food waste is also a direct financial loss. You're paying for food you never eat. Cutting waste means cutting spending, with no change in what you actually enjoy eating.

Plan and shop smarter

Most food waste starts before you get home. Over-buying — especially on fresh produce — is the biggest single cause of things going off unused.

• Check what you already have before writing a shopping list. Open the fridge, freezer and cupboards. Build meals around what needs using first.
• Write a rough meal plan for the week — even just dinner — and base your list on it. You don't need to be rigid; a plan just stops you buying things you won't get to.
• Shop your fridge first. If you're going shopping on Saturday, plan a use-it-up meal on Friday night to clear any items that won't last the week.
• Buy loose produce where you can, so you take exactly what you need rather than a fixed bag of more than you'll use.
• Be realistic about quantities. It's better to run slightly short than to consistently throw away the last third of a bag of salad.

Store food right

Storing food correctly can double or triple how long it stays fresh. A few rules that make a real difference:

• Fridge layout matters. The coldest part is usually the bottom shelf — use it for raw meat, fish and dairy. The door is the warmest part; use it for condiments and drinks, not milk.
• Most vegetables do better in the fridge (leafy greens, broccoli, carrots, herbs). Keep them in the crisper drawer or in a container with a slightly damp cloth to stay crisp longer.
• Some things should NOT go in the fridge: whole tomatoes (they lose flavour and go mealy), bananas, potatoes, onions, garlic and most whole citrus. Store these in a cool, dry, dark place.
• Bread goes stale fastest at fridge temperature. Keep it at room temperature for a few days, or freeze it.
• Fresh herbs last longer standing upright in a small glass of water, covered loosely with a bag, in the fridge — like a little bouquet.
• Seal opened packets with a clip or transfer to an airtight container. Exposure to air is the fastest route to stale or mouldy food.

Understand date labels

Date label confusion causes a lot of unnecessary waste. The key distinction:

• "Use by" = safety. This appears on high-risk perishables like raw meat, fish, soft cheese and chilled ready meals. Don't eat these after the use-by date, even if they look fine.
• "Best before" (or "best by") = quality. This appears on everything from dried pasta and tinned goods to eggs and yoghurt. After this date, the food may be slightly less fresh or flavourful, but it is not necessarily unsafe. Use your senses: if it looks, smells and tastes normal, it's likely fine.
• "Display until" / "sell by" is a stock management instruction for the shop — not relevant to you as a consumer. Ignore it when deciding whether to eat something.

Eggs are a good example: they're typically safe to eat for a couple of weeks past their best-before date if kept in the fridge and pass the float test (fresh eggs sink; very old eggs float). Always use your judgement and when genuinely in doubt, don't eat it — but know that a huge amount of food is thrown away unnecessarily because people don't know the difference between "use by" and "best before."

Use it up

Even with good planning and storage, you'll have odds and ends that need using. A few systems that make this easy:

• "Eat me first" box. Keep a labelled container or a designated shelf in the fridge for items that are close to their date. When you open the fridge, you see immediately what needs eating first.
• Use-it-up night. One dinner a week — often Friday — is a use-it-up meal. Frittatas, fried rice, pasta with whatever's left, soup, or a grain bowl all work well with almost any combination of vegetables, proteins and cooked grains.
• Leftovers as lunch. Cook with tomorrow's lunch in mind. A slightly bigger batch at dinner means no effort the next day.
• Scrap cooking. Vegetable peelings, Parmesan rinds, chicken bones and bread crusts all have second lives. Peelings can be roasted crispy; bones and rinds make excellent stock; stale bread becomes croutons, breadcrumbs or ribollita.

Preserve surplus food

When you genuinely have more than you can eat in time, preservation is the answer. Most methods require very little skill:

1. Freeze it

   Bread (sliced, so you can take what you need), cooked grains, soups, stews, blanched vegetables, overripe bananas and most leftovers freeze well. Label with the date and use within 3 months for best quality. Defrost in the fridge overnight rather than at room temperature.

2. Quick-pickle it

   A simple brine of equal parts vinegar and water with a pinch of salt and sugar preserves cucumbers, radishes, red onion, cabbage and carrots for weeks in the fridge. No special equipment needed — just a clean jar. Pickled vegetables work well as a side, in sandwiches or on grain bowls.

3. Dry it

   Herbs that are about to turn can be dried in a low oven (50–60°C / 120–140°F) for a couple of hours, or bundled and hung in a dry spot. Dried herb quality varies — fresher herbs dry better — but it's far better than the bin. Citrus zest can also be dried and stored for months.

Compost the rest

Some food scraps are unavoidable: citrus peel, eggshells, vegetable peelings, coffee grounds, tea bags. When these go to landfill, they decompose without oxygen and produce methane. Composting them instead creates useful material for your garden — or your neighbour's.

You don't need a large garden. A countertop caddy keeps scraps contained until collection day, or a small bokashi bin works in a flat. See our full guide to composting at home for how to start.

Your food waste checklist

• Check the fridge and cupboards before you write your shopping list.
• Plan at least a few dinners before you shop.
• Set up an "eat me first" spot in your fridge.
• Learn the difference between "use by" (safety) and "best before" (quality).
• Schedule one use-it-up meal per week.
• Freeze bread, cooked grains and leftovers before they go off.
• Store vegetables correctly — most in the fridge, not potatoes or onions.
• Compost peelings and scraps that can't be eaten.