How to Dehydrate Potatoes

How to Dehydrate Potatoes

I always seem to blink and my garden has buckets and buckets of potatoes for me to deal with all at once. I’m not complaining because there are ten thousand and one things you can make with them, but this year I decided to try something different: dehydrating them.

potatoes red wheelbarrow

The cool thing about dehydrating them is you’ll have them on hand when you’re sitting around craving the most delicious Homemade Scalloped Potatoes, but you’re feeling too lazy to do all that peeling and chopping. This will make your life way easier. You can also throw some in your winter soups.

potatoes slicer

Start by washing and peeling your potatoes. The number of potatoes you use depends on how many trays you have on your dehydrator. I can fit about 1-2 potatoes per tray depending on how big your trays/potatoes are.

sliced potatoes

Then I use a mandolin slicer to slice the potatoes about a 1/4 inch thick.

potatoes in water

Place the potato slices in an ice water bath and add a little lemon juice or fruit fresh to the water to prevent browning while you bring water to a boil in a large pot {a blanching pot if you have one}. After the water has reached a rolling boil, remove the potatoes from the ice water and place in the boiling water for about 4 minutes {set ice water aside for later}. Remove from boiling water and immediately run cold water over them while draining in a colander to stop the cooking process.

potatoes in dehydratoer

Drain and then carefully place the potato slices on the dehydrator trays or shelves. Set dehydrator to 125 degrees and dry until crisp {I set mine and left it overnight for about 8-10 hours and they were done when we woke up}. Canning jars work great to store them in, but any airtight container would work.


Need a slicer?  Amazon has the Progressive International HGT-11 Folding Mandolin Slicer on sale right now.

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  1. jen says

    Hey love your site and love reading up on all your ideas! I just saw this one and wanted to ask…How do they taste? We just bought a food dehydrator and a pressure cooker (no idea how to use either yet LOL) and this looks like a easy-good idea…Please let me know, thanks in advance!


    • Mavis Butterfield says

      Hi Jen, they taste just like regular potatoes when you make scalloped potatoes and add them to soups. :)

  2. PattyB says

    I made scalloped potatoes from my dehydrated ones and thought that the cooking time and the amount of liquid was not adequate enough to fully hydrate the potatoes. The change I made was to simmer the potatoes in a pot of water until they are half way hydrated. Then I used them in my recipe.

  3. Mandy P says

    Once again Mavis, you save the day. We glean potatoes in the fall and always come home with 50 pounds or more. Drying them would help me store more over the winter.
    We love to go gleaning. I go about twice in the fall and my young kids help me out. We spend about 90 minutes in a potato field with other Moms and their kids. The kids love to see who can find the biggest and smallest potatoes as well as interesting bugs. I know when we lived in CT people would go gleaning at orchards…that might be more what is available for you. Down here in southern Colorado, we have potatoes:)

  4. kim says

    Could you describe how you transfered the hot potatoes to the cooling ice water and then to the dehydrator trays? I dehydrated some potatoes last year and found this to be quite cumbersome. Perhaps there’s a better way….?

    • Carri says

      I use a colander pot. One of the pots with holes in the bottom. I full one big pot with ice water. Set the potato slices in the one with holes and push it down into the ice water. You don’t want to put the ice in with the patios because it takes the boiling pot to long to get back to temp when you pull the colander pot from the ice water and boiling water. After they have blanched you just transfer back to the ice water pot.

  5. Paula says

    Have you stored any dried like this long-term? Did they darken? I’ve been going to the trouble to blanch mine, and if it’s not necessary I’d prefer to cut that step out.

    • Sakura says

      I think you have to blanch them for a few minutes or they will brown when dehydrating. Also it makes it much easier to dehydrate and rehydrate for use in cooking. There is an awesome website on dehydrating that I found. It’s dehydrate2store. They have a whole bunch of information on dehydrating and using what you’ve made. I made some without blanching and they were nearly impossible to rehydrate.

  6. Patty P says

    I was just trying to figure out how to store all of my potatoes! I am totally going to try drying some…I don’t know why I didn’t think of that! Thanks for all of the great ideas!

  7. Charla Echlin says

    Great idea! I also have tons of potatoes as there were several volunteer plants this summer. I used to harvest all at once, but this year I am just keeping them stored in the ground and pulling them out as needed. Also- I was unable to harvest completely last year and found that many were just fine in the spring- they overwintered well. But my daughter gave me dehydrator last Christmas and I’m excited to use it! Thanks!

  8. Sakura says

    I love my dehydrator. I dehydrate a lot of what I grow. I love dehydrated potatoes, tomatoes, squash, swiss chard, we use all of it. It stores so easily. I just seal it in a mason jar or put an oxygen pack in with my mason jar and it will seal on its own.

  9. Mary says

    First – I love your site and the email updates. I cant wait to get home to see what new information you have and I wish I had found you sooner. And you seriously make me want more yard space to do more gardening.. the pallets. the raised beds.. the green house with gutters =D

    I am very interested in doing some dehydrating myself. But, I was wondering if you could separate you Dehydrating posts into own category since you have some for canning, recipes and such? I did use the search..but just lazy and thought would be so cool to group together

    thanks again

  10. arlene wong says

    which mandolin do you have that you can control the thickness. i have been looking for one like that for ages.

  11. Bee Girl says

    I’ve never dehydrated potatoes before and am very excited to try this out! That is, as long as we actually get a potato harvest big enough to justify the process this year 😉

  12. Jack says

    I just dehydrated some potatoes and the result was great. However I peeled and sliced them, but did not cook them in any way before drying them. I also dried them overnight in a conventional oven, on the lowest setting (50C), with the lid slightly open (put a towel between) to let the moisture out. This wasy I saved myself the trouble of doing extra work, AND getting another kitchen appliance that is essentially a low powered oven, right? I hope there’s not some necessary magic going on with the cooking part that I can’t be without, but the result is still really dry and crispy.

    As an experiment I tossed in a whole, a half and a quarter of a potato to see how much they would dry upp. It turns out they dried up about 2 mm from each side, but the center was still moist, so I guess slices of no more than 4-5 mm would be the optimal balance between getting as much potato biomass in there as possible and having it dry out completely. I’m all scientific like that.

  13. Sharon says

    If you are using dehydrated potatoes to start with how do you rehydrate them to use them in this recipe?

    • Mavis says

      If you want to rehydrate potatoes first (many recipes don’t require that), just throw them in almost boiling water, cover, remove from heat and let sit for about 25-30 minutes. Drain and boom, potatoes are good as new!

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