Think you know where the food should go in your fridge? Presume it goes anywhere it fits? Fine if you eat everything quickly, but as we're encouraged to shop less frequently, there are a few things you can do to lengthen the lifespan of ingredients. Here are our best fridge storage hacks to make sure food stays in tip-top condition.

It sounds obvious but it's worth checking your fridge's temperature. A fridge should be set to 4°C (40°F) to keep harmful bacteria from growing. Your fridge may have a thermometer or, alternatively, they’re cheap to buy. Any higher than 4°C (40°F) and you might be putting yourself and your household at risk.

When you get back from the supermarket, before adding new groceries to the fridge, take out everything that needs eating soon. Put all the new food towards the back, then return the older items to the front so you make sure to eat them first.

Nothing beats having a fully-stocked fridge but if you overcrowd it, it won’t be efficient at maintaining the right temperature as the cool air can’t circulate. Resist the temptation to overstuff the fridge and store some of its contents elsewhere if you can.

Some foods need to be kept in the fridge to stop them going off, for example meat and dairy. However, many products, such as shop-bought jam, mustard, mayonnaise and juice from concentrate, can be kept in the cupboard until opened. After opening, they need to be refrigerated.

Here are the foods that should never be kept in the fridge

The fridge door is the warmest part of the fridge so anything that needs to be kept chilled, such as milk, shouldn’t be put there. Reserve this space for water, juice, condiments, pickles, jams and spreads – products that have natural or added preservatives.

Turntables (also known as a lazy Susan) are a handy way of keeping jars and bottles organised. They also make items at the back easier to locate as they move around. You’ll be able to find these at most home and department stores.

Crisper drawers are designed to control humidity (some have an adjustable vent at the side and when it's closed, humidity increases) and prevent food touching the back of the fridge. Thin-skinned and leafy produce such as strawberries, spinach and lettuce fare best here, where it’s humid and they’re sheltered from the cold walls.

Some fruits like melons, apples, bananas, pears, avocados and stone fruit (such as peaches and nectarines) produce a chemical called ethylene. It causes some produce, such as greens, unripe bananas and berries, to ripen and spoil faster. Keep sensitive items in one drawer with the vent closed (which also helps with humidity). Store ethylene-producing fruit in the other drawer with the vent open, or outside the fridge.

Unripe fruit should stay outside of the fridge as cold temperatures hinder the ripening process. This includes unripe avocados, green bananas, hard peaches, plums, tomatoes and melon. Ripe fruit or produce that’s cut should be stored in the fridge.

Potatoes, onions and garlic will last a whole lot longer if stored in a cool, dark and well-ventilated cupboard or pantry. The humid conditions of the fridge will cause them to sprout and deteriorate. Once peeled and chopped, garlic and onion can go in the fridge.

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If you regularly have a lot of fresh produce, for example if there are a lot of people in the household or you grow your own, it might be worth investing in an ethylene gas absorber. This gadget absorbs the chemical which makes fruit and veg deteriorate and could save you money on wasted produce in the long run.

If you’re washing fruit and veg when it comes home from the grocery store, be sure to dry it thoroughly before storing it. Excess moisture will speed up decay. Some people suggest leaving washing until you’re ready to cook but it’s understandable if you don't want dirty produce in the fridge, or want food to hand that’s ready to eat.

A bag of salad leaves is always one of the first things to lose its freshness. Make it last longer by opening the bag as soon as you’re home from the shop and removing any soggy or wilted leaves. Pop a couple of clean paper towels in to absorb excess moisture, then clip the bag shut.

Hardy greens include broccoli, kale, bok choy and Swiss chard. Store these in a paper towel, in a resealable bag, in the fridge. Once you've used the produce, wash the bag and reuse it next time.

To keep them nice and crisp, wrap carrots, parsnips and turnips in a slightly damp paper towel or dishcloth (if they have leafy tops, remove them) before storing in a resealable bag in the fridge. This technique also works for fresh, hard herbs like rosemary, thyme, marjoram and oregano.

Take a look at these tips for organising your freezer

Fresh, soft herbs such as parsley, coriander and basil don’t belong in the fridge. Trim the ends and put in a jar or glass filled with a couple of inches of water, like a bouquet of flowers. Cover loosely with a resealable plastic bag.

The bottom shelf is the coldest part of your fridge and is where food that can spoil quickly if not kept cold, such as meat and fish, should be placed. Another reason to store it here is to prevent juices dripping onto and contaminating other foods.

The second coldest part of the fridge is the middle shelf and where your dairy should go, including milk, cream, yogurt, eggs (if you’re in the US; advice is different in Europe) and cheese. If your milk won’t fit, decant it into a smaller bottle or lay it on its side. Butter is fine in a covered dish on the kitchen counter for three weeks to a month, if the outside temperature isn't too hot.

After the door, the top shelf is the second warmest section of a fridge, so keep food that has already been cooked or doesn’t need cooking here. For example, leftovers, preserved or pickled food such as jam and gherkins, and cured meats such as salami, pancetta, prosciutto and pepperoni.

If you're going to eat all your bread within a few days, don't put it in the fridge. Cold temperatures change its texture and make it taste stale. If you plan to use a loaf over a couple of weeks, store it in the freezer. Defrost then refresh whole loaves in the oven or slice before freezing and simply pop in the toaster straight from the freezer.

Find our brilliant home-baked bread tips here

When deciding what to store in your fridge, consider the temperature of your kitchen. If it’s hot and humid, you might want to store things you'd usually leave out, like butter, eggs (if you’re in Europe), and certain fruit and veg, somewhere cooler to preserve them longer. Note, this will change between winter and summer.

Not everything needs to go in the fridge. In fact, using your freezer is key to fresh-tasting food. If you’re not eating raw chicken or beef mince in the two days after purchasing, it should be kept below -18°C (0°F). You have three to four days to eat leftovers, otherwise they should go in the freezer. Berries, bananas, avocados slices and green veg also fare well in the freezer.

Read how to freeze your excess fruit and veg

There's a whole host of high-tech food storage containers on the market that extend the life of produce. Much like the crisper drawer, some control the air flow and therefore the humidity and oxygen level inside the container. Others have built-in ethylene-gas absorbers.

These silicone food covers are perfect for covering half a lemon or avocado. They’re better than a plastic container as less air comes into contact with the surface of the fruit. It’s also much better for the environment than using plastic wrap or foil.

If you tend to forget what you’ve got in the fridge or when it needs eating, stick wipe-clean labels on containers or the edges of shelves. If you’d prefer to know what’s in your fridge without opening it, attach a white board to the front and list the contents, removing items as they get eaten.

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There are numerous nifty storage options available for wine and beer bottles, from wine racks to magnetic beer holders. They’re generally cheap and very useful for preventing bottles rolling about the fridge.

If you regularly find there’s not enough room for all your bottles, it may be time to invest in a separate drinks fridge. There are all different types on the market. Some have shelves specially designed for holding bottles while others have glass doors to show off their contents.

Every few days you should check what food needs eating. Don’t let it get to the point where mould grows as spores can spread to fresh food. Every few months remove the entire contents of the fridge, including condiments, and check the use-by dates. If you have an ice maker, check the manual to see how often the filter needs changing.

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There’s a simple trick to keeping your fridge smelling fresh: an open box of baking soda. It attracts and neutralises smells, meaning they don’t ruin other food. Every few months, throw away and replace the box.

Spills should be wiped away immediately with anti-bacterial spray, rather than letting them linger. A bigger clean, including wiping down all the surfaces and drawers, should be done every few months.

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