How to Store Leeks for Cooking?

If you’re wondering how to store leeks for cooking, you’ve come to the right place. Leeks are great in soups, salads, stews, and other dishes, and they’ll keep for days or months in the refrigerator. But if you want them to last longer, you’ll need to store them properly. Here are some tips and tricks to help you keep them fresh.

Here is all the information you require regarding leek storage and shelf life. Leeks last for a long time, so find out how to store them and how to spot a ruined one.

What is Leek?

The leek, a close relative of the onion, is indigenous to central Asia. This is a green vegetable with a long, white stem that resembles a spring onion or scallion but is much bigger.

Since the time of the Ancient Egyptians and the Roman Empire, leeks have grown. Leeks were reportedly a staple in Emperor Nero’s diet because he thought they enhanced his voice. Later, the vegetable was brought to Europe, where Wales quickly selected it as its national emblem. To honour their patron saint, St. David, many Welsh folks wear a leak or a daffodil today, on March 1.

Leek (Allium ampeloprosum L.) is a major crop in the Alliaceae family having morphological similarities to onions. It tastes gentler and more delicate than onion, but has a coarser texture. It is eaten uncooked when tender. It can also be cooked with other vegetables or used to season soups and stews.

Reference: Handbook of Herbs & Spices- Leeks

How to Store Leeks?

Leeks should be kept in the refrigerator untrimmed and unwashed to maintain freshness. If other foods absorb their smell, wrap them loosely or put them in a plastic bag. Leeks can be stored at room temperature if you plan to use them in the next two to three days.

Leeks can be kept in the refrigerator, which is the best way to store them, but they can also be kept in the pantry or kitchen for up to four days without suffering any real quality loss. So it could be a choice if you have limited refrigerator space.

Like nearly all vegetables, leeks shouldn’t be washed or trimmed before storage. Leeks are instead chopped and trimmed only before use.

Cleaning leeks for Storage

The leek develops almost entirely underground. As a result, the soil might adhere to them. Before storing or even cooking, make sure they are thoroughly cleaned.

Remove the root and the dark green foliage. Make a solution of one part vinegar to three parts water.

Dip the green leaves into the solution. All of the loose dirt should fall away. If tenacious dirt persists, use a soft veg brush to scrub away more difficult-to-remove filth.

Cut the leek in half lengthwise instead. This allows you to access any residual dirt readily. Clean the layers by separating them with cold water. Drain in a colander once clean. The leek is now ready to be sliced and cooked.

While most people discard the dark green leaves, they can be boiled into a soup.

Selecting Leeks for Storage & Cooking

You must first learn to identify specimens appropriate for Storage before learning how to store leeks.

Storing a damaged or rotting leek with healthy specimens might cause the entire crop to deteriorate.

The leek you choose should be sturdy and have a lot of straight, lush dark green leaves. Any leeks that are yellowing or have withering tops should not be kept. The leek should have a diameter of no more than 2.5 inches.

A rotten leek is easy to recognise once you know the warning signals. If the leek feels soft or limp, it has lost moisture and is no longer edible. Rotten or visible mould are other indicators that the leak has gone bad. You should also avoid storing any leeks that are yellowing or giving a foul odour.

Depending on how fresh they are, leeks can be stored for five to 2 weeks before use. Even if they appear fine after about five days, badly stored leeks should be discarded.

Cut leeks

Cut leeks should be stored in an airtight container or resealable bag in the refrigerator.

Leeks, for example, should be fully dried after being washed as part of your preparation before being placed in the container above or bag. Droplets of water on the leaves should be avoided as they could hasten the ripening of the vegetables.

Cut leeks should be dried on a clean kitchen towel for 15 to 30 minutes before being blotted dry with a different kitchen towel or even a paper towel.

(That paper towel can be dried and used again later.)

For comparable vegetables, use the same technique. I discuss it, for instance, in my essay on how to keep chives.

Cooked Leeks

Leeks that have been cooked and any recipe containing the vegetable need to be refrigerated. The ideal choice would likely be to store them in an airtight container, but any lidded pot should suffice.

Before refrigeration, allow the leeks to cool, but do so for no longer than two hours to ensure the dish’s safety. The 2-hour rule is in use in this situation.

Ways to Store Leeks

1. Store Leeks in the Refrigerator

According to our how-to store leeks guide, a leek can be stored in the refrigerator for up to two weeks. However, if placed straight in the refrigerator, the leak generates an odour that may permeate the fridge and be absorbed by other objects. To avoid this, place the leek in a plastic bag. This keeps moisture in and odours out.

Before storing, do not wash, trim, or cut the leek. This promotes decay. Place the leek in a bag in the crisper or hydrator drawer.

This procedure keeps the vegetables fresh for a few days. Wrap the leek in a moist towel and bind it with a rubber band to increase storage time even further. Please put them in a perforated plastic bag in the crisper drawer to catch any escaping moisture. This keeps the leek fresh for 10 to 14 days.

The refrigerator should be kept at a temperature of roughly 32 °F and a humidity level of 95 to 100%. The leeks begin to yellow and decompose when the temperature becomes too high. Raising the humidity level in the refrigerator helps to prevent wilting.

Cooked leek slices can also be refrigerated. However, they will only endure a few days. Smaller, more perishable specimens tend to last longer than larger specimens.

Remove the root and green leaves from the stored leek when ready to use. Before cooking, cut the leek in half and thoroughly wash with the vinegar water solution indicated above.

2. Store in the Freezer

Freezing is preferable if you need to keep a large number of leeks.

Before cutting the leek in half and cleaning it, remove the dark green leaves and the root. Once clean, cut into half-moon slices. Freeze the slices in Ziploc containers. Many people prefer to blanch the leeks before freezing them. This keeps the vegetable’s beautiful green colour throughout freezing. Bring a saucepan of water to a boil and season with salt—Blanch for 30 to 60 seconds.

You can freeze the frozen leek slices individually on a baking dish to make them easier to use. Place half-moon leek slices on a baking sheet lined with waxed paper or baking parchment. This keeps the slices from adhering to the tray. While the technique takes longer, it prevents the slices from clumping together, allowing you to remove a handful of leek slices whenever you need them.

3. Making Use of a Solar Food Dryer

A solar food drier, such as the BioChef Sol Food Dehydrator, is composed of several trays positioned beneath a tilted polycarbonate sheet or glass window. A black-painted metal shelf beneath the trays absorbs heat.

Wash and finely slice the leeks. Spread the slices on a tray in the solar food dryer in a single layer.

The sun’s energy dehydrates the leek slices in a solar food dryer. A bottom vent allows cool air to enter—the sun’s rays passing through the glass or polycarbonate sheet warm the air. Warm air escapes via the top vent, carrying moisture with it.

The leek slices are entirely dehydrated and ready to use for the rest of the winter in just a few hours.

You can also dehydrate the leeks by slicing them. When the slices are completely dry, they can be stored in canning jars.

4. Keep Leeks in Water

This is a fantastic alternative if you need to use your leek harvest within a week but don’t have enough refrigerator space.

Fill a big jar halfway with ice-cold water. Immerse the leek completely. This preserves the vegetables for 2 to 3 days.

Make sure the environment around the jar isn’t too hot or humid. Heat and humidity can cause the leek to wilt. If your kitchen is too hot, move the jar to a cold, dry, and airy location.

5. Keeping Leeks in the Root Cellar

If you enjoy producing your vegetables, you have a root cellar. Root cellars are not widespread in modern homes, but if you have one, it’s a great place to keep root veggies like leeks.

Washing your leeks before Storage is similar to refrigerating them. Check to see if their roots are still intact. Then, fill a bucket or box with 6-8 inches of moist soil. Finally, arrange the leeks upright in it as follows:

The recommended storage temperature for leeks is 32°F (or 0°C). Avoid getting the leaves wet because this can shorten their storage time. They will keep fresh for 3 to 4 months if stored in this manner.

How Long do Leeks Stay Fresh?

Fresh leeks can be stored in the fridge for up to two weeks and in the pantry for 3 to 5 days. It would help if you ate or discarded leftovers within four days of cutting them up or cooking them.

If those times aren’t long enough, you can freeze leeks.

While leeks are related to onions and garlic, they do not have the same shelf life (here’s how long onions last). The shelf life of leeks is substantially closer to that of celery.

You may expect roughly two weeks of Storage if you buy it fresh and follow the storage rules.

If you can’t fit them in your refrigerator and must store them in the pantry or kitchen cabinet, the shelf life is reduced to 3 to 5 days, depending on the temperature.

Cooked leftovers, salads, or cut-up leeks can keep for 3 to 4 days, which is typical for practically all forms of leftover vegetables.

How can you tell if your Leeks are Bad?

If the leeks are:

If things reach this far, those leeks are no longer useful. They are either squishy, slimy, or limp. This is an indication of moisture loss and prolonged Storage.

They’re filthy. If only a little portion of the vegetable has gone bad, chop it off and utilise the rest. That is a much less typical circumstance than the one described above, although it occurs occasionally.

The odour is offensive if your leek doesn’t smell like a mild onion but instead has a harsh, biting, or off odour; toss it out.

You discover mould. If your salad or cooked leeks dish has any fuzzy activity on the surface, it’s time to toss it. Attempting to scoop and discard the mould while eating the remainder is a bad idea.

Let anything cut or cooked rest for more than four days. It’s time for them to leave for their safety at that moment. They might still be okay, or they might not, but you never know.
What’s important to note here is that a couple of coarse outer leaves are normal for leeks that sit in Storage for more than a few days. You peel and discard those leaves, cut off the dried parts, and use the rest.

A similar thing happens to lettuce and brussels sprouts. After prolonged Storage, the outermost leaves are often soft, darkening, or not good enough to use and need to be discarded. I discuss that in detail in my articles on how long lettuce lasts and the shelf life of brussels sprouts.


Leeks are best kept in the refrigerator and can be used within five to fourteen days. The vegetable’s characteristic aroma can linger in the refrigerator for days. To prolong the usability of cooked leeks, wrap them in a damp towel and tie them with an elastic band. Place the wrapped leeks into a plastic bag or a perforated plastic container. Place the package in a vegetable drawer in the fridge. Wrapped leeks can stay fresh for up to two days.