How To Freeze Dry Cucumber

How To Freeze Dry Cucumber

Freeze Dried Vegetables

There’s a reason why people say, “cool as a cucumber.” The inside can be up to 20 degrees cooler than the outside temperature. This is because it has 95% water, more than watermelons and pineapples. This is why it’s very hydrating and, unfortunately, doesn’t store well. So let’s freeze-dry cucumbers and turn them into a delicious snack that can last 25 years on your shelf.

How Do I Pick The Best Cucumber?

The best cucumbers are the firm, blemish-free ones with no soft spots. The skin can be bright to deep forest green in color depending on the variety. However, some are pale yellow (or, for others, white). Others have some white streaks or accents on them. What’s important is that the skin has no brown or unusually yellowish color.

How Do I Prepare Cucumber For Freeze Drying?

The first step always is to clean your vegetables before processing. Even if you grew your cucumber pieces in your garden, they’re still prone to bacteria. Wash each vegetable thoroughly under running water to eliminate all surface contaminants. For added measure, soak them in a vinegar solution (4 cups water, 1/4 cup vinegar) for 5-10 minutes. After soaking, rinse until the vinegar scent subsides.

Rubbing Both Ends

Some cucumbers can be bitter because of the cucurbitacins. The more the cucumber has cucurbitacins, the more bitter the skins become. These compounds are present in vegetable, but growing conditions can increase their amount. One of the ways to lessen the bitterness is to cut out a small portion at the top. Then rub that “cap” in a circular motion where it was once attached. Keep rubbing until you no longer see a foam-like substance oozing from the cucumber. Next, do the same on the opposite end, then wash thoroughly.


It’s not a very popular method, but it can help remove the bitterness. It’s the same as the previous method, but the only difference is cutting the cucumber half lengthwise. Sprinkle the exposed surface with salt, then rub the surfaces together until foam emerges. Rinse and repeat 3x.

Fork Furrowing

After cutting the ends and peeling the cucumber, use the tines of the fork to furrow along the cucumber. Then wash the vegetable to take out the bitter compound.

Freeze Dry Cucumber


There are several ways to cut your cucumber, depending on what you want to do with them.

Slices for Chips

This is a popular way to freeze dry cucumber since it’s very easy and requires minimal effort. If you love using your extremely sharp knife, they work well in slicing cucumbers thinly. On the other hand, a mandolin can do the job easily if you’re pressed for time and prefer even slices. On both methods, make sure to observe your hands to prevent accidents. Wear protective gloves or knuckle protectors if you feel you have to.

For flavored cucumber chips, you can marinate the cucumber slices in vinegar (apple cider, white, red wine, or rice vinegar would do), sugar, water, and a pinch of salt. Let it sit for at least 30 minutes, but overnight is best. Or you can flavor it with other spices to make a healthier snack.


Minced freeze-dried cucumbers are great for garnishing and adding texture to salads. What you can do is mince the cucumber for a delicate crunch. Easier to make into cucumber powder too.

Dices and Cubes

Want to make a Dragon Fruit Refresher drink but with a cucumber version? Cubes would be great to add flavor and texture to a lighter drink that you can boost with lemons.

Whatever shape you prefer, make sure the cucumber’s no thicker than 3/4 inch. You can also deseed the veggie before slicing, especially for cubed ones.

Do I Pre-Freeze Cucumber Before Freeze Drying?

Cucumber has a high water content, so pre-freezing can work to your advantage. It’s not necessary, but a 48-hour pre-freeze can help save you time, electricity, and machine wear and tear.

Make sure the trays and chamber are both cold when you pre-freeze. This will help prevent the cucumbers from melting or condensing, which can strain your machine.

How To Freeze Dry Cucumber

To freeze dry cucumber with your Harvest Right freeze dryer, all you have to do is:

  1. Turn on the machine and press “START > NON-LIQUID.”
  2. For room-temperature cucumber trays, select “NOT FROZEN”.
  3. If you pre-froze your vegetable slices, choose “FROZEN”.
  4. Wait for your freeze dryer to pre-cool for 15-30 minutes or until its -8°F (-22 °C).
  5. When the unit tells you, close the drain valve and load the trays.
  6. Close the chamber door and make sure there’s a tight seal around the ring.
  7. Press “CONTINUE” and let the machine do its work.

Freeze-drying cucumber can take about 32 hours, depending on factors like the room’s humidity and temperature. Your product should be crisp, airy, crunchy, and easy to crumble.

How Do I Store Freeze Dried Cucumber?

Mason jars are good for short-term storage because they’re easy to reseal. They’re also strong enough to protect your fragile cucumber crisps. For long-term storage, use Mylar bags. They’re light weight, can keep light and heat out, and don’t take up a lot of space.

Remember to use oxygen absorbers before sealing your container. About 1-2 of the 300cc packets are okay for every gallon size of your container. Replace the packets each time you open your stash. However, this is unnecessary if you finish a jar or pack in a day or two.

Keep the jars or bags in a cool, dark, and dry room. Storage temperature should be below 72°F (22 °C) with a relative humidity of 15% or less.

How Do I Rehydrate Freeze Dried Cucumber?

Rehydrating is easy and only takes 5-10 minutes. Place the cucumber in a bowl and add water until it pools at the bottom. Next, mix the pieces so that every piece gets rehydrated.

One thing you need to note, though. These rehydrated pieces won’t have the same texture as a fresh cucumber. They will have the same flavor, but that fresh, refreshing crunch won’t be there.

Where To Buy Freeze Dried Cucumber

If you prefer to buy freeze-dried cucumber, here are some places you can order from.

MRE Depot Future Essentials Freeze Dried Cucumber

MRE Depot specializes in meals ready to eat food. Their freeze-dried cucumbers are 100% US-Made and packed in #2.5 cans sold for $13.95. Yes, these are twice smaller than #10 cans, so they’re not as plenty.

The Rotten Fruit Box

Not only does The Rotten Fruit Box have freeze-dried pomegranates. They also offer freeze-dried cucumber grits. These are made using 100% cucumbers sourced from local farmers. The product has no sugar added, is GMO-free, vegan, and is fiber-rich. A 0.8oz (23g) pack will cost you $5.29. Unfortunately, there are no reviews to let us know if the price is worth it.

KOYAH Organic Cucumber Powder

If you’re freeze-drying cucumbers to make cucumber powder, then why not try KOYAH. Their cucumber powder is made from 100% cucumber that’s USA-grown, organic, non-GMO, gluten-free, soy-free, nut-free, vegan, and whole-food. A jar that costs $39.99 weighs 2.75 oz (78g), enough to give you 60 servings.

Freeze-dried cucumber transforms this refreshing vegetable into a crunchy, satisfying snack. If you soak or season the sliced veggie with vinegar, you’ll discover that the acid mellows down a touch. Something good for those who aren’t particular about the acidic bite.

Will you freeze-dry or buy freeze-dried cucumbers instead? Let us know your choice and why in the comment section.

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  1. Maya says:

    Have you tried the baggie and wet paper towel thing? I’m wondering if that might work better. I’m going to try that next time, as just putting my cucumber slices in water just turned them to mush. They still tasted good after I drained them, but the texture was just not what I was looking for.

    • Hi, Maya! Haven’t tried it yet, but that could probably work since the cucumber’s not submerged or soaked in water. However, we wouldn’t guarantee the texture. Cucumbers have high water content, and freezing it creates ice crystals that changes the texture of the vegetable. It’s going to absorb water like crazy, but sadly, gone is the crisp, fresh texture.

  2. Suzie Clary says:

    I’ve seen where they use spray bottle water on delicates.

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