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    Home » Sides » Mashed Okinawan Sweet Potato

    Mashed Okinawan Sweet Potato

    Jan 6, 2021 · by Valentina · 28 Comments

    This post may contain affiliate links.

    Jump to Recipe

    This Okinawan Sweet Potato recipe will wow anyone who tries it. Okinawan purple sweet potatoes are unique and delicious, with a honey-like sweet flavor. This makes for a fun side dish that's excellent with almost anything.Mashed purple sweet potatoes in a black bowl

    These mashed purple sweet potatoes are stunning, and they're rich, creamy and delicious!

    What is an Okinawan Sweet Potato?


    • Also known as Hawaiian Sweet Potatoes or Hawaiian Purple Sweet Potatoes, these unique potatoes are magenta-purple on the inside, and a creamy beige on the outside.
    • It's believed that these potatoes were brought to the Philippines and China in the 1490s from the Aztecs of South America with the Spaniards.
    • They are thought to have reached Japan in the 1600s, where they were planted in Okinawa—the southern island of Japan—before they were cultivated throughout Japan.
    • Later the purple potatoes found their way to Hawaii where they're now a staple and part of their native menu.
    • As they cook, the purple color of the Okinawan sweet potato becomes deeper and more intense.
    • Not only are these beautiful and incredibly delicious -- they're also full of nutrients. These purple sweet potatoes are prized for their high level of antioxidants, and are said to have 150 percent more antioxidants than blueberries.

    several raw beige potatoesThe outer skin is beige, not unlike many other potatoes, including russets.

    What do they taste like?


    They flavor of an Okinawan sweet potato (Hawaiian Sweet Potato) is mildly sweet with notes of honey.

    Slightly more dense than other potatoes, when mashed with a couple added ingredients, the result is super rich and creamy.

    partially peeled okinawan potato with japanese knifeThe inside is a magenta-purplish color with streaks of white -- unlike any other potato.

    How to Cook Okinawan Sweet Potato


    Like other potatoes, these purple tubers can be steamed, sautéed, roasted, baked and mashed.

    I love them mashed because I think they make for an incredibly beautiful and vibrant side dish.

    one raw okinawan purple potato slied in half

    Where to Find Them


    You should be able to find them in most Asian markets, and often in larger grocery stores. (They almost always have them at Mitsuwa Marketplace, which has locations in southern and northern CA, TX, IL, and NJ.) You can also order them here.

    They are usually available year round.

    peeled okinawan potatoes with their peelsEven the peels are pretty!

    Ingredients for Mashed Purple Sweet Potatoes

    • Okinawan Sweet Potatoes
    • unsalted butter
    • half and half
    • unsalted butter
    • salt
    • pepper

    raw hawaiian purple potatoes cut into chunks with knife

    Recipe Tips and Substitutions


    • To make the mashed potatoes even more rich and creamy, use heavy cream instead of the half and half.
    • If you'd like to make a vegan version, substitute the butter and the half and half with about ½ cup of Cashew Cream or a creamy coconut milk.
    • You can mash the potatoes as much or as little as you'd like. I leave a few small chunks, but make them pretty smooth.

    water with raw purple potatoes and water with cooked purple potatoesHere are the Hawaiian purple sweet potatoes in water. On the left they're raw and about to be cooked, and on the right, they've just finished simmering for about 15 minutes and are completely cooked.

    Look at how the Okinawan potatoes change from magenta when they're raw, to a deep purple color when they're cooked.

    That's one of the things that makes these purple potatoes different from others -- most lose their purple color and become dull and/or dark, while these only become more vibrant.

    cooked chunks of purple sweet potatoes

    I hope you love this recipe!

    More purple potato recipes:

    • Purple Sweet Potato Muffins
    • Roasted Purple Sweet Potato Fries
    • Perfectly Baked Okinawan Potatoes
    Mashed purple sweet potatoes in a black bowl

    Mashed Okinawan Sweet Potatoes

    Valentina K. Wein
    Rich, creamy and unique, this is a delicious and fun side dish that's excellent with almost anything.
    5 from 4 votes
    Print
    Prep Time 15 minutes mins
    Cook Time 15 minutes mins
    Total Time 30 minutes mins
    Course Side Dish
    Cuisine Japanese, Hawaiian
    Servings 4
    Calories 213 kcal

    Ingredients
      

    • 1½ pounds Okinawan sweet potatoes
    • 2½ tablespoons unsalted butter
    • ¼ cup half and half
    • 1¼ teaspoons sea salt
    • freshly ground black pepper to taste

    Instructions
     

    • Cut and add the potatoes to a pot of water. Fill a medium-sized stock pot with cold water. Peel the potatoes and cut them into large chunks (approximately 2 to 3 inch chunks). Add them to the pot with the water as you go.
    • Cook the potatoes. Place the pot over high heat and bring to a boil. Reduce to low and simmer, uncovered, until the potatoes are tender (they should easily slide off fork prongs), about 15 minutes.
    • Strain and mash. Strain the potatoes and place them in a medium to large mixing bowl. Use a large fork or potato masher to mash them. (They can be as smooth or as chunky as you'd like.)
    • Add the remaining ingredients and serve. Add the butter as soon as possible so that it melts into the hot potatoes. Then add the half and half, salt and pepper, and mix only until everything is incorporated. Serve!

    NOTES

    Calorie count is only an estimate.

    NUTRITION

    Calories: 213kcal
    Keywords great side dishes for meats and stews, recipes with purple sweet potatoes
    Have you tried this recipe?I'd love to see it on Instagram! Tag me at @cookingontheweekends or leave a comment & rating below.

    Cooking On The Weekends is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.


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    Reader Interactions

    Comments

    1. ted

      September 29, 2021 at 10:28 am

      Just discovered these gems at the local Asian market in Cherry Hill, NJ
      The only problem I have is, do I eat them with the regular meal or do I eat them as a dessert. I consider them a delicacy.
      What a great find.

      Reply
      • valentina

        September 29, 2021 at 7:56 pm

        Hi Ted. So happy you found the Okinawan sweet potatoes. I just love their beautiful color. They could certainly make for a unique dessert. Enjoy them with and after the a meal! 🙂 ~Valentina

        Reply
    2. Kathy @ Beyond the Chicken Coop

      January 11, 2021 at 4:31 am

      5 stars
      The color is stunning! I love how they change color when cooked. I will need to keep my eyes open at our market to see if I can find some of these amazing sweet potatoes!

      Reply
      • valentina

        January 12, 2021 at 2:07 pm

        I hope you see them, Kathy. Enjoy and thanks so much! 🙂 ~Valentina

        Reply
    3. Karen (Back Road Journal)

      January 10, 2021 at 10:08 am

      You are right, they do make an incredibly beautiful side dish. If I could find them, I would build an entire meal around them.

      Reply
      • valentina

        January 12, 2021 at 2:07 pm

        Thanks so much, Karen. Hope you see them in your stores soon. 🙂 ~Valentina

        Reply
    4. Jeff the Chef @ Make It Like a Man!

      January 10, 2021 at 8:59 am

      Purple potatoes! I think they would look so great On Easter Sunday.

      Reply
      • valentina

        January 12, 2021 at 2:06 pm

        Thanks, Jeff. Oh yes, so pretty for Easter -- and they would be fantastic with lamb. (Should it happen to be on the menu.) Enjoy! 🙂 ~Valentina

        Reply
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    Hi, I'm Valentina, certified chef, owner, recipe developer and photographer at Cooking on the Weekends. I'm also a mom of two boys and a Los Angeleno. I use seasonal whole foods to create unique and comforting recipes for casual entertaining.

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