You might be wondering why an article aimed at people looking to make extra money and start side hustles is talking about garlic. It all comes down to basic maths. Throwing away mouldy, sprouted vegetables is literally throwing your hard-earned cash into the food bin. Keeping your ingredients fresh cuts your weekly supermarket spend, keeping more money in your pocket.

Beyond simply saving a few quid, learning how to preserve garlic opens the door to a genuinely profitable little side hustle. Artisan food products—like handmade garlic powder, fermented honey garlic, or wild garlic pesto—sell incredibly well at local UK farmers’ markets, car boot sales, and online via platforms like Etsy.

So, how exactly do you preserve garlic? The short answer is: keep whole, unpeeled bulbs in a cool, dry, dark, and well-ventilated spot—ideally at room temperature and well away from your fridge.

If you want to stop wasting food, bulk-prep your ingredients to save time, or potentially start selling small-batch artisan garlic products to make some extra cash, read on. I’ve put together a realistic, practical guide on exactly how to do it.

Before we start turning garlic into a side-hustle product, you need to know how to keep your standard supermarket bulbs fresh. If you buy the standard three-pack of garlic from Tesco or Aldi, the goal is to make it last until you’ve used every single clove.

Keep it out of the fridge

It is tempting to throw everything into the crisper drawer, but the fridge is actually the worst place for whole garlic. Refrigerators are cold and damp. The cold mimics the winter season perfectly, which sends a signal to the garlic bulb that it’s time to start growing. This is why refrigerated garlic sends out green shoots so quickly. While sprouted garlic is safe to eat, the green shoots are bitter and ruin the flavour of your cooking.

Find a cool, dark, and dry spot

Your best bet is a dry, dark cupboard. You are aiming for a temperature around 15°C, but room temperature in a standard British home is usually fine, provided the garlic isn’t sitting directly next to an oven or a radiator. Sunlight will also encourage the bulb to sprout, so keep it away from the windowsill.

Choose the right container

Garlic needs to breathe. If you suffocate it, moisture will build up, and it will begin to go mouldy. Ditch the plastic net or the plastic bag you bought it in. Instead, keep your garlic in a wire basket, a small terracotta pot with holes, or even a simple brown paper bag loosely scrunched at the top.

Freezing Garlic: A Quick Fix for Busy Cooks

If you find a massive batch of garlic heavily reduced with a yellow sticker at the supermarket, buy it. You can freeze it almost instantly, saving you time and protecting your grocery budget. Freezing won’t give you a product you can sell, but it’s brilliant for personal meal prep.

Freezing whole cloves

You can freeze whole, unpeeled garlic cloves. Just pull the bulb apart, chuck the unpeeled cloves into a freezer-safe bag, squeeze the air out, and throw them in the freezer. When you need one, just pull it out. Running it under a warm tap for five seconds will make the skin slip right off. You won’t be able to slice it neatly as freezing alters the texture, making it slightly mushy once thawed, but it is perfect for throwing into a bolognese, curry, or soup.

Freezing chopped or minced garlic

If you want to make life incredibly easy for your future self, take an hour on a Sunday to peel and mince a large batch of garlic. You can use a food processor to speed this up. Spoon the minced garlic into a silicone ice cube tray, add a tiny drop of water or a dab of olive oil to hold it together, and freeze. Once frozen solid, pop the cubes out and store them in a freezer bag. You now have instant garlic portions ready to drop directly into a hot frying pan.

The pros and cons of freezing

The main benefit of freezing is convenience and zero waste. The downside is texture. Frozen garlic lacks the crisp crunch of fresh garlic, so you shouldn’t use it in raw recipes like fresh salsa or directly rubbed onto bruschetta. However, for 90% of home cooking where the garlic is cooked down anyway, you won’t taste the difference.

Next-Level Preservation: Making Garlic Pay

This is where preservation turns into a side hustle. Artisan food products command a premium price. You won’t become a millionaire selling small batches of garlic, but it’s an easy way to make an extra £50 to £100 at a weekend market using cheap, accessible ingredients.

Dehydrating garlic for homemade powder

Have you ever tasted freshly made garlic powder? It is leagues ahead of the dusty, tasteless jars you buy in the shops. Making it is simple. Peel and thinly slice your garlic cloves (a mandoline slicer is great for this, but please watch your fingers). Spread the slices on a food dehydrator tray and run it at 40°C to 45°C until the garlic snaps easily without bending. If you don’t have a dehydrator, you can use your oven on its absolute lowest setting with the door wedged open slightly to let moisture escape.

Once dry, blitz the slices in a cheap coffee grinder until it turns into a fine powder. Store it in sterilised, airtight jars with a little food-safe silica gel packet taped to the inside of the lid to prevent clumping. A little 50g artisan jar can easily sell for £4 or £5 at a craft fair, and the profit margins are excellent.

Fermented honey garlic

This is incredibly popular right now, especially among health-conscious buyers and foodies. All you do is fill a sterilised jar about three-quarters full with peeled, lightly crushed garlic cloves, and pour over raw, unpasteurised local honey until all the cloves are covered. Keep the lid slightly loose so the natural carbon dioxide can escape, and tip the jar up and down once a day for about a month.

The moisture in the garlic thins the honey, creating an incredibly versatile, sweet, and savoury syrup that is amazing on pizza or roasted meats. If you source your honey from local British beekeepers and use quality jars, this makes a brilliant gift product to sell around Christmas.

Pickling garlic for long-term storage

Pickled garlic loses its harsh, raw bite and becomes a tangy, crunchy snack. Simply pack peeled cloves into a sterilised jar, pour over a hot brine of white wine vinegar, water, salt, and peppercorns, and seal it. Pickled garlic will easily last in the fridge for several months.

A quick note on selling your produce in the UK

Let’s be realistic about selling food. If you are going to sell preserved foods to the public, you need to register with your local council’s Environmental Health department at least 28 days before trading. It is free to do. You should also sit a Level 2 Food Hygiene and Safety online course, which takes a few hours and costs around £20. Lastly, under current HMRC rules, you have a £1,000 Trading Allowance per tax year. If your side hustle brings in less than £1,000 in revenue, you don’t even need to declare it to the taxman. It is a fantastic, low-barrier way to start making money.

The Danger Zone: Garlic and Botulism

If you are preserving food for yourself, and especially if you are selling it, you need to understand the safety risks. This isn’t meant to scare you, but you need to know what you are doing.

What is botulism?

Clostridium botulinum is a bacteria that produces a deadly toxin. It thrives in environments that are low in oxygen, low in acid, and kept at room temperature. Unfortunately, garlic is a low-acid vegetable, and it often carries botulinum spores naturally from the soil.

The risks of homemade garlic oil

The most common mistake beginners make is dropping raw garlic cloves into a nice bottle of olive oil, tying a rustic ribbon around it, and keeping it on the kitchen counter (or worse, trying to sell it). Because the oil completely cuts off the oxygen supply to the garlic, and the temperature is warm, it creates the perfect environment for botulism to grow. You cannot sell homemade raw garlic oil made this way.

How to infuse safely

If you want to flavour oil for your own home cooking, keep it in the fridge and use it within four days. If you want to make it last longer, you must freeze the garlic oil mixture. For commercial applications, commercial producers use complex acidification processes using citric acid that are very difficult to replicate safely without professional pH testing equipment in a home kitchen. Stick to dehydrating, pickling, or honey fermentation (honey is naturally highly acidic) for your side hustles.

Growing Your Own Garlic to Maximise Profit

If you want to increase your profit margins for your side hustle, or totally eliminate garlic from your shopping budget, grow it yourself. It is one of the easiest crops to grow in the UK.

Hardneck vs. softneck varieties

In the UK, plant your garlic cloves in late autumn (October or November). They need a period of cold weather to split into separate cloves. You can choose between softneck and hardneck varieties. Softnecks (like Solent Wight) have a milder flavour, grow more cloves per bulb, and store for much longer. Hardnecks have a stronger, more complex flavour and produce a delicious edible flower stem called a ‘scape’, but they won’t last as long in storage. If you are growing to sell fresh, softnecks are usually your best bet.

Curing your harvest for longevity

When you pull your garlic out of the ground in early summer, you cannot just throw it in a cupboard. It needs to be ‘cured’. Brush off the worst of the soil, but do not wash the bulbs. Hang them up by their stalks in a dry, airy shed or garage out of direct sunlight for three to four weeks. The outer skins will dry into that papery texture you recognise from the supermarket, protecting the bulb inside. Once properly cured, home-grown softneck garlic can last for six to eight months.

Common Mistakes to Avoid

Even with the best intentions, it is easy to ruin a batch of garlic. Here are the most common traps to avoid.

Storing next to potatoes and onions

Do not keep your garlic in the same basket as potatoes or onions. Onions and potatoes emit ethylene gas and moisture as they sit, which will cause your garlic to sprout and rot much faster. Give them their own separate space.

Wrapping in plastic

Never put your garlic in Tupperware containers or Ziploc bags if you are storing it at room temperature. Plastic traps the vapour that naturally evaporates from the vegetable. Within a week, the moisture will settle into a fuzzy green mould, and the whole bulb will go straight into the bin.

Ignoring the sprouts

If a green sprout does appear in the centre of your garlic clove, don’t throw the whole thing away. Slice the clove in half completely down the middle and simply pull out the green shoot with the tip of your knife. The remaining white flesh is perfectly safe to cook with, though it may take on a slightly sharper taste.

Frequently Asked Questions (FAQ)

Can I store garlic in olive oil safely?

As mentioned earlier, only if you are putting it straight in the fridge and using it within four days. Leaving raw garlic in oil at room temperature creates an environment where deadly botulism bacteria can thrive. It is not worth the risk.

Why has my pickled garlic turned blue?

This is a very common shock for people attempting pickling. Occasionally, the sulfur compounds in the garlic react with trace minerals in the water or the vinegar, causing the cloves to turn a bright blue or turquoise colour. As alarming as it looks, it is completely harmless and perfectly safe to eat.

Is sprouting garlic safe to eat?

Yes, it is entirely safe. It won’t hurt you, but it won’t taste brilliant either. The green shoot is bitter and can overpower delicate dishes. Just cut it out before mincing the rest of the clove.

Can I grow new garlic from a sprouting supermarket clove?

Technically yes, but it often fails. Supermarket garlic is often treated with sprout-inhibitors to extend shelf life, and many are varieties grown in warm climates like China or Spain that won’t cope well in wet UK soil. Buy proper seed garlic from a UK garden centre for the best results.

Summary: Preserving Your Garlic and Your Bank Balance

Getting a grip on food preservation is a brilliant, practical way to stop throwing your money away. Standard garlic bulbs will last for months if simply kept in a dark, dry, well-ventilated spot away from the fridge and away from potatoes.

However, if you are looking to make extra money, garlic is an incredibly cheap raw material to experiment with. Dehydrating it into premium garlic powder, fermenting it in real local honey, or pickling it can transform a 30p bulb into a product you can sell for several times the price at weekend craft markets. Just be sure to play by the rules: avoid botulism risks by steering clear of room-temperature oil infusions, get your basic online food hygiene certificate, and register your side hustle with the council. It’s practical, low-cost, and genuinely rewarding.

FAQs

1. How should garlic be stored to keep it fresh?

Garlic should be stored in a cool, dark place with good air circulation, such as a pantry or a garlic keeper. It should not be stored in the refrigerator as this can cause it to sprout and become rubbery.

2. Can garlic be frozen to keep it fresh?

Yes, garlic can be frozen to keep it fresh. Simply peel and chop the garlic, then place it in an airtight container or freezer bag. It can be stored in the freezer for up to 6 months.

3. What is the best way to store peeled garlic cloves?

Peeled garlic cloves should be stored in an airtight container in the refrigerator. They can also be stored in oil, but this should be used within a week to prevent the risk of botulism.

4. How long can garlic be kept fresh for?

When stored properly, whole garlic bulbs can be kept fresh for up to 3-5 months. Once the cloves are separated, they will last for about 10-14 days. Peeled garlic cloves will last for about a week in the refrigerator.

5. Are there any methods to preserve garlic for longer periods of time?

Yes, garlic can be preserved for longer periods of time by pickling it in vinegar, making garlic paste, or dehydrating it to make garlic powder. These methods can extend the shelf life of garlic for several months.