Reducing Food Waste at Home: Storage Tips That Work

Most food waste at home is not dramatic. It is the half bag of salad that wilted, the bread that went stale, the leftovers pushed to the back of the fridge. These small losses add up to a lot of money and a lot of environmental impact, and most of them are avoidable with better storage and a few routines.

This guide is for anyone who throws away food they meant to eat. You will learn what date labels really mean, how to arrange your fridge so food lasts longer, what you can freeze, how to turn leftovers into meals and how to shop in a way that prevents waste before it starts.

Why it matters

The United Nations Environment Programme's Food Waste Index Report 2024 estimated that the world wasted about 1.05 billion tonnes of food in 2022, equal to roughly 19 percent of the food available to consumers. Households were responsible for the largest portion, around 631 million tonnes, or up to 60 percent of the total. The report put the average at about 79 kg per person per year.

These are global figures, and your own household will differ, but the message holds: what happens in kitchens counts. Wasted food also means wasted money, water, energy and labor used to grow, transport and store it.

Best before, use by and other dates

Date labels cause a lot of unnecessary waste, because people treat them all as an expiry date.

In the United States, the Department of Agriculture explains that dates on most foods describe quality rather than safety, with infant formula as the exception. In the UK, the Food Standards Agency describes "best before" as a quality marker and "use by" as reserved for highly perishable foods where a risk to health arises after a short period. The UK guidance also allows freezing food up to its use-by date, with food eaten within 24 hours of defrosting.

Check your own country's rules on the packaging or the food agency's website. Storage conditions matter as much as the date. Food left out too long can be unsafe even if the date is weeks away.

Fridge zones that make food last

A fridge is not equally cold everywhere, and a few habits make a difference. Aim for 4°C (40°F) or colder. Built-in dials are often imprecise, so an inexpensive fridge thermometer is worthwhile.

• Top and middle shelves: Ready-to-eat foods, leftovers, dairy, eggs (where stored cold) and drinks. This is the most stable temperature.
• Bottom shelf: Raw meat, poultry and fish in sealed containers or on a tray, so juices cannot drip onto other foods. This is usually the coldest part of the fridge.
• Crisper drawers: Vegetables and fruit, ideally in separate drawers. Some fruits, including apples and bananas, give off ethylene gas that speeds the ripening and spoilage of nearby produce.
• Door: The warmest area, suitable for condiments and jars, not milk or eggs.
• The "eat first" box: A clear container at eye level for items close to their date, open packets and leftovers. Look there before you cook or shop.

Do not overpack the fridge, because air needs to circulate. Cool hot food briefly, then refrigerate within two hours, or one hour in hot conditions, using shallow containers.

Smart storage for common foods

• Leafy greens: Wash and dry thoroughly, then store in a container lined with a paper towel.
• Herbs: Soft herbs such as coriander (cilantro) and parsley keep longer standing in a little water, like flowers. Woody herbs keep wrapped loosely in a damp towel.
• Tomatoes, bananas and onions: Keep them out of the fridge, in a cool place. Cold can dull tomato flavor and texture.
• Potatoes: Store in a cool, dark, ventilated place and away from onions.
• Bread: Slice and freeze it, then toast straight from the freezer.
• Cheese: Wrap in wax paper or baking parchment, then loosely in a container, so it can breathe without drying out.
• Opened cans: Transfer the contents to a covered container in the fridge.

A practical freezing guide

Freezing pauses spoilage. Food held constantly at -18°C (0°F) stays safe, so freezer time limits refer to quality rather than safety. Freeze food while it is fresh, in portions you will use, and label each bag with the contents and date.

Thaw frozen food in the fridge, in cold water changed every 30 minutes or in the microwave followed by immediate cooking. Avoid thawing on the counter.

Turning leftovers into new meals

Plan for leftovers rather than hoping they will be eaten.

1. Cook once, serve twice. Make a double portion and give the second one a different look: roast chicken one day, chicken in a wrap or fried rice the next.
2. Use the "everything" formats. Soup, stir-fry, frittata, fried rice, pasta bake and flatbread toppings take almost any odds and ends.
3. Revive stale items. Stale bread becomes breadcrumbs, croutons or French toast. Overripe fruit goes into smoothies or baking.
4. Use the whole vegetable. Broccoli stalks, beetroot leaves and carrot tops can be eaten or simmered into stock.
5. Eat leftovers within three to four days, or freeze them early. For more on batch cooking, see meal prep for beginners.

Shopping habits that prevent waste

• Check before you buy. Look in the fridge, freezer and cupboards, and write a list.
• Plan meals first. Buy ingredients for specific dishes, with one or two flex meals.
• Shop more often, in smaller quantities, if you tend to waste fresh produce.
• Be wary of multi-buy offers on perishable food unless you can freeze or finish it.
• Read the labels. Look at date type and storage instructions, and compare pack sizes and unit prices. Our guide on how to read food labels helps with this.
• Choose pack sizes that match your household. A bargain you throw away is not a bargain.

Common mistakes

• Treating every date as an expiry date and throwing away food that is fine.
• Ignoring the opposite problem. A date does not make food safe if it has been stored badly.
• Washing berries and salad leaves before storing them damp, which speeds up spoilage.
• Overbuying fresh food for meals that never happen.
• Storing food in the door or on top of the fridge where it warms.
• Never checking the back of the fridge.
• Freezing at the last minute. Freeze food while it is still fresh, not on its last day.

Frequently asked questions

Is food safe after the best-before date?

Often yes, if it has been stored properly and looks, smells and tastes normal. Best-before dates relate to quality. Do not rely on this for foods with a use-by date.

Can I eat food after the use-by date?

No. The use-by date marks the point after which highly perishable food may not be safe. The exception is food you froze before the date, which you can cook after defrosting.

Can I refreeze food that has thawed?

According to the US Department of Agriculture, meat thawed in the refrigerator can be refrozen, before or after cooking, though quality may suffer. Meat thawed in other ways should be cooked before it is refrozen.

How do I know if food has gone bad?

Smell, texture and appearance often show it, but some bacteria cannot be seen or smelled. When in doubt, throw it out, especially with meat, fish, dairy, rice and leftovers.

Next steps

1. Check your fridge temperature with a thermometer and adjust it to 4°C (40°F) or below.
2. Create an "eat first" container and look there before every meal.
3. Move bread, overripe fruit and spare portions of cooked food to the freezer this week.
4. Write a shopping list from what you already have, and note what gets thrown away for two weeks.