Simmered Kabocha with Shio Koji 南瓜の塩麹煮

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  • Delicious simmered kabocha squash flavored with the popular Japanese seasoning shio koji (rice koji and salt), resulting in unique umami flavor.

    simmered kabocha with Shio Koji in a bowl.

    Have you tried Kabocha (カボチャ, 南瓜) before?  It’s called Kabocha squash in the U.S. and Japanese pumpkin in Australia and New Zealand.  This simmered kabocha is one of the easiest way to cook kabocha, and of course it is super delicious!

    Kabocha Squash Pumpkin on a table.

    What is Kabocha?

    Kabocha is an Asian variety of winter squash, but in Japan we refer to it as simply pumpkin.  Kabocha’s exterior and texture is very hard when it’s raw, and has a thick deep green skin.  I know it’s not particularly “pretty.”  But when you cut it open, (it will require some strength to cut through), you will see a beautiful intense yellow-orange flesh inside.

    Kabocha is very moist and has chestnut-like fluffy texture.  It’s also filled with beta-carotene (which is converted to vitamin A by our body), iron, vitamin C and B.

    Simple and Delicious Simmered Kabocha

    Because kabocha is naturally very sweet, sweeter than butternut squash, a nice way to enjoy the kabochoa’s natural flavor is to simmer it with minimum seasonings.  For this recipe, I used only Shio Koji (塩麹), which brings out nice umami from kabocha.

    Shio Koji

    Shio koji is a traditional Japanese ingredient made with a fermented rice malt (koji) and salt (shio). The enzymes contained in shio koji break down proteins to draw umami out of meat and fish.  If you want to read more about it, click here.

    simmered kabocha with Shio Koji in a bowl.

    To get the Simmered Kabocha with Shio Koji recipeclick here over at Hikari Miso’s website.

    Where to Find Shio Koji for Simmered Kabocha?

    Hikari Miso Shio Koji for Simmered Kabocha.

    I use shio koji from Hikari Miso and their products are available in Japanese grocery stores and Amazon.

    If you want to make Homemade Shio Koji, watch this short video below.  For the step-by-step recipe, click here.

    Other Delicious Kabocha Recipes

    Simmered Kabocha Squash (Japanese Pumpkin) in a Japanese blue willow bowl.

    Try my favorite Classic Simmered KabochaKabocha Pork Stir FryKabocha Salad and Kabocha Squash Soup!

    Creamy and rich Kabocha Squash Soup in soup bowls.

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    4.2 from 5 votes
    Simmered Kabocha | Easy Japanese Recipes at
    Simmered Kabocha with Shio Koji
    Prep Time
    5 mins
    Cook Time
    5 mins
    Total Time
    10 mins
    Delicious simmered kabocha squash flavored with the popular Japanese seasoning shio koji (rice koji and salt), resulting in unique umami flavor.
    Course: Side Dish
    Cuisine: Japanese
    Keyword: nimono, shio koji
    Servings: 4
    1. Cut the kabocha into 1-inch cubes and put into a medium saucepan.
    2. Add just enough water to completely cover kabocha, and add Hikari Miso Shio Koji.
    3. Bring to a boil then lower the heat to simmer. Cook the kabocha until a skewer goes through smoothly, about 4-5 minutes.
    4. Cover with a lid and set aside to allow the flavor to slowly be absorbed.  Let the kabocha squash cook slowly with the residual heat while it absorbs flavor from the shio koji. If you overcook the kabocha squash, it will get mushy and lose its shape and appeal.  You can serve this dish cold, at room temperature, or warm.

    Recipe Notes

    Recipe by Namiko Chen of Just One Cookbook. All images and content on this site are copyright protected. Please do not use my images without my permission. If you’d like to share this recipe on your site, please re-write the recipe in your own words and link to this post as the original source. Thank you.

    Disclosure: This post is sponsored by Hikari Miso.  To read more about my partnership with Hikari Miso, click click here.

    Editor’s Note: The post was originally published on February 9, 2014.

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