How to Cure Sweet Potatoes

PDF download Download Article
Storing and feasting on cured root vegetables couldn’t be easier
PDF download Download Article

If you've ever eaten a sweet potato immediately after harvesting it, you know that the results can be disappointingly flavorless and overly starchy. To allow your crop to reach its full potential, cure your sweet potatoes by letting them rest in a warm, humid environment for 4 to 14 days. This will convert their starches into sugars, heal any cuts on the potato's surface, and thicken their skins to seal in natural moisture. Ideal curing conditions are around 85 °F (29 °C) with 80-90% humidity. Using some simple tricks, you can reach these conditions at your farm or home, ensuring delicious and hearty sweet potatoes.

Part 1
Part 1 of 3:

Preparing the Sweet Potatoes

PDF download Download Article
  1. After growing and harvesting your sweet potatoes , use your hands or a towel to gently brush off any large clumps of dirt, mud, or clay. But resist the urge to wash them: although the sweet potatoes need to be in a humid environment to cure, the tubers themselves shouldn't be wet. If they are, the extra moisture can cause them to rot. [1]
    • If your sweet potatoes are damp when you dig them up (due to a recent rain or watering), be sure to dry them thoroughly before curing.
    • Don't worry about fully cleaning your sweet potatoes: you can do that after the curing process when their skins are thicker.
  2. Watermark wikiHow to Cure Sweet Potatoes
    Separate bunches of potatoes as well as any extra growths or roots. Although this may cause wounds in the sweet potatoes, the curing process will create a second skin over any scratches and bruises. [2]
    • If you have to slice into your sweet potatoes to separate them, that's okay! Even cut ends will generally heal over during curing- just try to minimize the size of your cuts. [3]
    Advertisement
  3. Curing should be started within a few hours of harvesting. Even a delay of as little as 12 hours between harvest and curing has been shown to produce less reliable results.
    4. Advertisement
Part 2
Part 2 of 3:

Curing in a Warm, Humid Environment

PDF download Download Article
  1. If you have access to a greenhouse, you can easily cure your crops by placing them in an out-of-the-way corner. Simply place your sweet potatoes in a box, cover it with a damp towel, and place it in the warm greenhouse. [4]
    • Instead of a box, you can also use an insulated cooler bag to help create humidity. [5]
  2. If you don't have a greenhouse, you can create similar conditions in your home. Take a plastic grocery bag and punch a few holes in it. Place the sweet potatoes into the bag in a single layer. Then tie the bag shut and place it in a warm, sunny window. [6]
    • If it gets chilly or your windows are drafty, cover the bag with a blanket or towel when the sun isn't shining. [7]
  3. Put your sweet potatoes in a box or bucket and place it in a small space, such as a pantry or closet. Add a bucket full of water (to increase humidity) and a space heater set to 85 °F (29 °C). Use a thermometer to monitor the temperature in the room and ensure you have ideal curing conditions. [8]
    • Unless you own a space heater specifically designed for use in bathrooms, be careful to avoid getting the space heater itself wet. [9]
  4. Begin by installing a 40-watt bulb in your oven. Then place a tray of water on the bottom rack of the oven and a tray of sweet potatoes on the upper rack. Turn the light on (but leave the oven itself off) and close the oven nearly all the way, leaving it just a sliver open. Use the thermometer to check the temperature of the oven a few hours later- it should be around 85 °F (29 °C). [10]
    • If your oven gets too warm, open the door slightly further. If it's not warming up enough, try closing the oven door or installing a stronger lightbulb.
    • Since the curing process takes 4 to 14 days, you'll need to use an oven that's not part of your daily routine.
    • If your oven door won't stay ajar, try using a thin metal spatula to prop it open. [11]
    5. Advertisement
Part 3
Part 3 of 3:

Finishing the Curing Process

PDF download Download Article
  1. When the sweet potatoes are finished, they should be slightly moist and significantly more firm. If they're still soft after your first check, let them cure for a few more days and try again. If your temperatures or humidity levels are not quite ideal, curing may take up to 2 weeks. [12]
    • If some sweet potatoes remain tender after the rest have finished, this means they have not cured properly. Discard these to prevent them from causing the others to spoil faster. [13]
  2. Watermark wikiHow to Cure Sweet Potatoes
    Remove the sweet potatoes from the warm, humid room and take them out of their bags or boxes. Pack the cured sweet potatoes in straw or wrap them individually in newspaper and place them into a wooden or cardboard box without a lid. Move the box to a dark, cool location such as a root cellar or basement. Allow the sweet potatoes to rest here for an additional 6-8 weeks to finish the curing process.
    • Don't have a basement? Try storing the sweet potatoes under your bed. [14]
    • If you want to use your sweet potatoes more quickly, you can skip this step and eat them right after removing them from the humidity. However, the longer you let them rest in a cool, dark space, the sweeter they will become. [15]
  3. Cured sweet potatoes can last for up to a year if kept at a temperature around 55 °F (13 °C) to 60 °F (16 °C). Look for a location with some humidity (around 75-85%) and pack your sweet potatoes in a box or wooden crate to allow air to circulate.
    • You can safely store your finished sweet potatoes wherever you finished curing them: a basement, a root cellar, or under a bed.
    • Avoid placing them in the refrigerator, as sweet potatoes are easily damaged by cold temperatures. [16]
    4. Advertisement

Expert Q&A

Ask a Question
200 characters left
Include your email address to get a message when this question is answered.
Submit
      Advertisement

      Video

      Tips

      Submit a Tip
      All tip submissions are carefully reviewed before being published
      Name
      Please provide your name and last initial
      Submit
      Thanks for submitting a tip for review!

      You Might Also Like

      How to
      Parboil Potatoes Perfectly Every Time
      How to
      Make Baked, Roasted, or Mashed Potatoes in the Microwave
      How to
      Fix Gluey Mashed Potatoes
      How to
      Prepare Instant Mashed Potatoes Using a Stove or Microwave
      How to
      Blanch Potatoes
      How to
      Cook a Sweet Potato in the Microwave: Quick & Simple Recipes
      How to
      Store Cut Sweet Potatoes
      Do You Have to Peel Potatoes? When to Peel & When Not To
      How to
      Make Gratin Dauphinoise Without Cream
      How to
      Cook Sweet Potatoes
      How to
      Boil Potatoes in the Microwave
      How to
      Bake Russet Potatoes
      Super Simple & Delicious Microwave Baked Potato Recipe
      How to
      Bake a Yam
      Advertisement

      References

      1. ↑ https://morningchores.com/curing-sweet-potatoes/
      2. ↑ https://www.motherearthnews.com/homesteading-and-livestock/cure-sweet-potatoes-zbcz1310
      3. ↑ https://www.motherearthnews.com/homesteading-and-livestock/cure-sweet-potatoes-zbcz1310
      4. ↑ https://www.youtube.com/watch?v=fv_ezQ0trCI
      5. ↑ https://www.youtube.com/watch?v=PTxL4vrem5o
      6. ↑ https://www.tenthacrefarm.com/harvesting-curing-and-storing-sweet-potatoes/
      7. ↑ https://www.tenthacrefarm.com/harvesting-curing-and-storing-sweet-potatoes/
      8. ↑ https://morningchores.com/curing-sweet-potatoes/
      9. ↑ https://www.sylvane.com/portable-heater-safety-tips.html#SafetyTipReminders
      1. ↑ https://morningchores.com/curing-sweet-potatoes/
      2. ↑ https://www.vanengelen.com/pejtest/12sweet.htm
      3. ↑ https://morningchores.com/curing-sweet-potatoes/
      4. ↑ https://www.tenthacrefarm.com/harvesting-curing-and-storing-sweet-potatoes/
      5. ↑ https://homestead-honey.com/how-to-grow-harvest-cure-and-store-sweet-potatoes/
      6. ↑ https://www.youtube.com/watch?v=PTxL4vrem5o
      7. ↑ https://homestead-honey.com/how-to-grow-harvest-cure-and-store-sweet-potatoes/

      About This Article

      In other languages
      Thanks to all authors for creating a page that has been read 51,322 times.

      Did this article help you?

      Advertisement