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How to Dehydrate Potatoes for Long term Storage

Article By: Suraiya Fardous - December 7, 2023
How to Dehydrate Potatoes for Long term Storage

Dehydrated potatoes can be your savior at the time of urgency. Potatoes are one of the accessible vegetables, and the dehydration method works effectively for its preservation. Undoubtedly, it will make your favorite potato dishes available whenever you want. After knowing all of the advantages, if the question of how to dehydrate potatoes comes to your mind, you are about to know the answer!

Keeping in mind the future use, you can cut the potatoes in a certain size. The experience of various recipes with different kinds of dehydrated potatoes can give delish to your mouth. Additionally, the dehydration process can help you speed up cooking and present healthy recipes and portable snacks. In this article, you will learn all the methods of dehydrating differently shaped potatoes along with their storage process. Let’s know all the procedures regarding dehydrated potatoes.

How to Dehydrate Potatoes for long term storage

You can cut the potatoes differently based on the usage of dehydrating the potatoes. If you want to make potato powder, then go for mashed potato dehydration. For potato chips, dehydrating sliced potatoes will be fine. You can also make delicious snacks by dehydrating cube potatoes.

Dehydrating Shredded Potatoes

Dehydrating Shredded Potatoes

To get all the benefits of dehydrating potatoes, let’s start the dehydration process with dehydrated shredded potatoes.

  • Take a box grater and shred your potatoes first. You can also use a food processor.
  • Next, pour cold water into a bowl and soak the shredded potatoes in it. This process will prevent the potatoes from oxidation and take away unnecessary starch.
  • After finishing the shredding process, transfer the potatoes to a colander and rinse all the remaining water.
  • Add the potatoes in a pot and slightly boil them for a minute.
  • Keep the mild-boiled potatoes in a strainer and again pour them in cold water.
  • Take the tray of the dehydrator and spread the potatoes in a single layer onto it.
  • Turn on the dehydrator and adjust the temperature to 125 degrees Fahrenheit.
  • It will take more than 7 hours to complete the process. You should check first if the potatoes are brittle and hard and then remove them from the dehydrator.

Dehydrating Potatoes Slicing

Dehydrating Potatoes Slicing

Sliced dehydrated potatoes are mainly used for potato chips, scalloped potatoes, or casseroles.

Here are the procedures for how to dehydrate sliced potatoes:

  • Slice the potatoes first. You can use a knife in this regard.
  • Follow the above-mentioned process, which includes soaking in cold water, mild boiling, and rinsing in the cold water.
  • The major difference here with the previous method is that the slices should be placed carefully on the tray and should not overlap.
  • Place the potatoes inside the dehydrator for 7 hours.
  • But you should start checking it after 5 hours to avoid burning. The final texture of the potatoes will be brittle and snap in half without any kind of flexibility.
  • Now, dehydrating potato slices are ready to store.

Dehydrating Mashed Potatoes

Using dehydrating mashed potato flakes in different recipes enriches the taste immediately. This type of potato flake is commercially used.

Here is the method of how to dehydrate mashed potatoes:

Step 1: Wash and peel the potatoes

The first step is washing and peeling the potatoes.  You can keep the peel on, but problems can arise when you rehydrate the potatoes. The peel won’t allow the potatoes to rehydrate smoothly.

Step 2: Cut and then boil the potatoes

Cutting potatoes into 4 pieces will be appropriate for boiling. Boil for at least 20 minutes and check if the potatoes are soft and tender. Avoid undercooking the potatoes.

Step 3: Mash the potatoes

After draining the potatoes, reserve the liquid. Use the reserved liquid for mashing the potatoes smoothly.  To get the smoothest powder, make the mashed potatoes a little runnier than usual.

Step 4: Add spices to the mash

Add different spices like garlic powder, salt, pepper, paprika and continue mashing. Plain and seasoned mashed potatoes are preferable for making the final recipe.

Step 5: Put the mashed potatoes in the food dehydrator

To put the mashed potatoes in a dehydrator, you need to first spread it in a thin layer on dehydrator tray. Use Paraflex sheets or parchment paper in this regard. Start dehydrating mashed potatoes at 135 degrees Fahrenheit. Dehydrate for 8-10 hours until you notice the uniformly colored, dried, and brittle texture.

Step 6: Remove the mashed potatoes from the dehydrator

The dehydration process will be finished by lifting off the liners and breaking the whole mixture with delicious crisps. The potatoes should be bendable, crispy, and breakable after the dehydration process. Take out the dehydrator tray and cool the dehydrated potatoes before crumbling and storing.

Note: For making the powder of the potatoes, you can go for a coffee grinder or use a food blender processor.  Process them finely to rehydrate them properly in the future.

Step 7: Store the dehydrated mashed potatoes

Finally, store dehydrated mashed potatoes in a vacuum seal container in a cool, dark, and dry place. Use the powder within one year as it remains of the best quality at this time.

Dehydrating Potatoes Cubes

Shred and cubed potatoes can be packed together. Follow this cube potato dehydration process whenever you face problems regarding space. Dehydrating potato cubes can be used in stews, soups, potato salads, and casseroles.

This cube potato dehydration process is similar to dehydrating shredded potatoes. The major thing you have to keep in mind is that the cubes should be small, about ⅓ each side. You can cut them even smaller.

In the dehydration process, the outside part of the large cubes dried too quickly compared to the inside portion. This thing is called “Case hardening”. If this happens, there is a chance of not dehydrating the inside part at all. In order to avoid this problem, it is important to cut the cubes smaller.

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How Long Does Dehydration Potatoes Last?

Previously, we have known how to dry out potatoes. Now, let’s find out how long dehydrated potatoes last. The storing method determines how long the potatoes will be edible. If you store the potatoes in a vacuum-sealed jar, it can last up to 1 year without refrigeration. The product made by dehydrated potatoes can remain edible for one to two years. But it is safe to consume them within half a year.

The frozen, dehydrated potatoes can last more than one year. You have to take away the moisture from the dehydrated potatoes for long-term use. Keeping in mind some factors like the process of dehydrating, the place of storing, and the freshness of the raw potatoes will also help you in this regard.

How to Rehydrate Dehydrated Potatoes?

You can use the dehydrated potatoes directly to dishes and enrich the flavor. But rehydrating potatoes can make the dish taste more appealing. So, to get the original flavor and texture of preserving potatoes, here are the steps for how to rehydrate potatoes.

Follow this procedure before using the potatoes for baking or cooking.

  • Take an equal number of dehydrated potatoes and water and soak them together. For example, take 3 cups of potatoes with 3 cups of water.
  • Hot water works more effectively than cool water for rehydration. Moreover, the same-sized and freshly cut potatoes will be reconstituted quickly.
  • Soak the potatoes for less than 2 hours because longer than that can initiate microbial activity, which is harmful to the potatoes.

How to Dehydrate Potatoes in an Oven?

In case you don’t have a dehydrator, dehydrating potatoes in the oven can be your next option.

Here are the steps for how to dry Potatoes in the oven:

  • Cut the potatoes according to your wish.
  • Do the above-mentioned procedures serially before initiating dehydration in the oven. Then, place the potatoes on line baking sheets with parchment paper.
  • Bake for 6-9 hours at your oven’s lowest settings and flip them in between.
  • You can also check if the potatoes have released moisture while opening the oven door for flipping.

How to Store Dehydrated Potatoes?

After knowing all the dehydration procedures, the most important thing is how to store dehydrated potatoes long-term. You can store these potatoes for a long time.

Here are the ways to store the dehydrated potatoes:

  • You have to ensure first that the dehydrating potatoes for storage are dried and cool.
  • Choose any type of airtight container or zipper baggies for storage. It would be better to go for a sealed container and keep dehydrating potatoes for long-term usage.
  • The Mason jar can make your work easier as it is possible to store several pounds of potatoes in one jar.
  • Condition your dehydrated potatoes before long-term usage. It means shaking the jar daily for a week and making sure there is no remaining moisture inside the potatoes. If you find any, start dehydrating them again before storing them.

Why Do Dehydrated Potatoes Turn Black or Grey?

If you dry the raw potatoes directly, it will turn black or grey. Most people don’t find it worth consuming. So, the best way to dry potatoes is by cooking them. This will give the dried potatoes a brownish look. Wash the potatoes first and try to prick the skin as much as you can. Finally, stack them tightly in an enameled covered pan to get satisfactory results. You can use a microwave or usual oven to cook the potatoes all together. You have to cook in such a way that potatoes won’t turn black, but they have to be cooked enough for grating easily.

Using a solar oven can be on your priority list as it cooks the potatoes perfectly for dehydration. You can follow this solar oven method to find out how to dehydrate potatoes for hash browns. Shred the potatoes before putting them into the solar oven. Stop the cooking process on the oven after seeing the steam collecting on the inside oven glass. The whole process usually finishes within 3 hours, depending on the weather.

This cooked potato will turn hash brown while grating. Again, cool the potatoes first before grating. Keep them in the refrigerator overnight for this. You can peel or keep the skin of the potatoes. Usually, the skin peels out automatically at the time of grating.

Do you have to blanch potatoes before dehydrating?

If you don’t like the brownish shed on your dehydrated potatoes, you have to go for blanching.  As previously said, dehydrating potatoes raw is not a wise decision. In this cooking process, when the potatoes turn brown, it is unappetizing for many.

So here is the process of blanching potatoes before dehydrating them –

  • Soak the sliced cube or shredded potatoes in a bowl.
  • Boil some water intensively in a different pot, then add the soaked potatoes to that.
  • Wait for a minute and let the potatoes tender. The most important part is that you have to stop boiling when the potatoes are fork-tender.  This type of potato will pierce easily with a fork but won’t mash.


Hope now you are all clear about how to dehydrate potatoes properly, including other details. You can choose any of those ways and start the dehydration process. Dehydrator potatoes can increase the taste of soup, burger, or roll. It is possible to experiment with different dishes by adding dehydrated potatoes. If you are wondering about how long dehydrated potatoes last, the answer is also mentioned.

Sometimes, you can face problems with black dried potatoes. So, to avoid that, both methods of blanching and dehydrating potatoes for hash browns are also discussed simultaneously. The appropriate method of storing and the safe process of dehydrating the potatoes is also mentioned here. Hope you will get the perfect guideline after going through every portion of this article. Without further due, you can dehydrate any type of potatoes and use them in times of emergency, as well as make delicious dishes.

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