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Home » Sides » Simmered Pumpkin (Kabocha no Nimono)

March 19, 2019 By Yumiko 12 Comments

Simmered Pumpkin (Kabocha no Nimono)

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Seasoned with combinations of soy sauce, sake and sugar, Simmered Pumpkin is simple to cook and one of the best ways to enjoy the taste of Japanese pumpkin. It is quick to make and great to serve hot or cold.

Hero shot of Simmered Pumpkin in a bowl with a snow pie as garnish.

The first thing that comes to my mind when I think of pumpkin recipes is Simmered Pumpkin (Kabocha no Nimono). I think that many Japanese people think the same way.

Even though this is a representative Japanese pumpkin recipe, it had been forgotten and sitting in my file until one of my readers recently requested it in her touching email.

About Kabocha

Kabocha (かぼちゃor 南瓜) is a variety of pumpkin  and is often called Japanese pumpkin or Kabocha squash.  But even among Japanese pumpkins, there are different species.

The Japanese pumpkin that I used today is pretty large by Japanese standards (well, everything here in Australia seems large anyway) and the colour of the skin is a bit different from those you find in Japan.

The kabocha sold in Japan is small and has very dark green skin. It can almost fit in one hand with fingers wide spread. But the Japanese pumpkin I used is about 3 times larger and the skin had the light brown and dark green pattern. Although it is sold as Japanese Pumpkin, this kind of pumpkin is also called Kent pumpkin.

Cutting pumpkin and removing part of skin.

Compared to butternut pumpkin, which might be more readily used in Western cuisines, Kabocha contains less calories. It is also a great source of vitamin A.

Preparing Pumpkin for Simmering

The skin of Japanese pumpkin is hard but edible. The flesh closest to the skin is a bit hard as well but the flesh closer to the centre where the seeds are is very soft. This makes it tricky when simmering pumpkin pieces in a pot.

Have you ever cooked pumpkin pieces only to find out that one side of the pumpkin piece is disintegrated while the other side is cooked perfectly? That’s because of the different firmness of the flesh.

Here are the few things you can do to avoid inconsistency in the texture.

  • Cut the pumpkin into similar size pieces (about 4cm/1½” cubes) so that they cook at the same time.
  • Peel part of the skin off of each piece in a few patches to allow the simmering sauce penetrate  the hard part of the flesh.
  • Trim the corners and sides of each piece to prevent the corners from breaking easily.
  • Place pumpkin pieces skin side down when simmering so that the hardest part gets cooked more.

Pumpkin pieces placed in a pot skin side down and the pumpkins in a pot with a drop lid.

Cooking Technique – Mentori (面取り)

The cooking technique to trim corners and sides of vegetables is called ‘mentori’ (面取り). The name came from the fact that by removing a corner/side, you get (‘tori’, 取り) an extra flat surface (‘men’, 面).

This technique is commonly used when simmering vegetables, especially when there is a possibility of breaking the corners of the vegetables. I used this technique to prepare daikon/white radish in my recipe, Oden (Simmered One Pot Dish).

You can use either a knife or a peeler to remove the corners. The photo below compares pumpkin pieces before and after mentori.

Comparing before and after mentori with two pumpkin pieces.

Flavouring of Simmered Pumpkin

The word ‘nimono’ (煮もの) means cooked dish/simmered dish. Most simmered dishes use dashi stock to give umami flavour to the dish. But Kabocha no Nimono (かぼちゃの煮もの) does not use usual dashi stock. Some recipes don’t use stock at all so that you can make the most out of sweetness and flavour of the pumpkin.

I used konbu dashi today by simply rehydrating konbu in water but you can use just water instead.

For 250ml/8.5oz of water or konbu dashi, you will need 2 tablespoons of sugar, 1½ tablespoons of soy sauce and 1½ tablespoons of sake. To enhance the sweetness of the pumpkin, sprinkle sugar over the pumpkin pieces and leave it for 10-15 minutes before cooking.

Zoomed-in photo of Simmered Pumpkin.

Simmered Pumpkin (Kabocha no Nimono) can be served hot, at room temperature or cold. It keeps 3 days in the fridge. It is a great dish to go into a bento box!

YumikoYM_Signature

P.S. Don’t forget to see the section ‘MEAL IDEAS’ below the recipe card! It gives you a list of dishes that I have already posted and the new recipe in this post that can make up a complete meal. I hope it is of help to you.

4.67 from 3 votes
Hero shot of Simmered Pumpkin in a bowl with a snow pie as garnish.
Print
Simmered Pumpkin (Kabocha no Nimono)
Prep Time
20 mins
Cook Time
15 mins
Total Time
25 mins
 

Seasoned with combinations of soy sauce, sake and sugar, Simmered Pumpkin is simple to cook and one of the best ways to enjoy the taste of Japanese pumpkin. It is quick to make and great to serve hot or cold.

Recipe Type: Side
Cuisine: Japanese
Keyword: kabocha, kabocha squash recipe, pumpkin, pumpkin recipe, simmered pumpkin
Serves: 4 Servings
Author: Yumiko
Ingredients (tbsp=15ml, cup=250ml)
  • 600g/1.3lb Japanese pumpkin (note 1)
  • 2 tbsp sugar
  • 250ml/8.5oz konbu dashi (or water)
  • 1½ tbsp soy sauce
  • 1½ tbsp sake
Instructions
  1. Remove seeds using a spoon, including stringy tissues. Cut the pumpkin into about 4cm/1½” cubes (note 2).

  2. Peel part of skin of each piece in patches and trim corners of each pumpkin piece (note 3).

  3. Place pumpkin pieces in a shallow pot, skin side down. Make sure that the pumpkin pieces are snuggly fit in the pot without overlapping (note 4).

  4. Sprinkle sugar over the top of the pumpkin pieces evenly and leave for 15 minutes.
  5. Add remaining ingredients to the pot and bring it to a boil over high heat.
  6. Reduce the heat to medium, place a drop lid on (note 5) and cook for 10-15 minutes until the pumpkin is cooked (a skewer can get through).

  7. Turn the heat off and transfer the pumpkin to serving bowls.

Recipe Notes

1. There are different varieties of Japanese pumpkins. In Australia, Kent pumpkin is often labelled as Japanese Pumpkin and that is what I used today. It is larger in size than the Japanese version and the skin colour is different, but it works well with this recipe. If you can find the Japanese version of Kabocha, it’s even better.

2. See the step-by-step photo in the post showing how to cut the pumpkin.

3. See the step-by-step photo in the post showing how to remove skin in patches and trim corners, which is a cooking technique called ‘mentori’ (面取り) in Japanese.

4. If the pot is too large, place a small bowl or a cup to fill the space so that the pumpkin sits on the bottom of the pot without extra room to move around.

5. A drop lid is called 'otoshibuta' (落し蓋) in Japanese. It is a round lid that is slightly smaller than the opening of a saucepan. It is traditionally made of wood but I have a stainless-steel lid. It is placed on top of the ingredients in a pot to ensure the heat is evenly distributed, and the ingredients cook faster, and stay in place without breaking apart. It also stops the liquid from evaporating quickly.

If you don’t have a drop lid, you can make one with baking paper or aluminium foil. Cut a square in foil, fold the edges to make it a round shape with the diameter slightly smaller than the pot. Then poke the foil with a knife or a chopstick to make holes in several places.

6. Nutrition information per serving.

serving: 229g calories: 84kcal fat: 0.7g (1%) saturated fat: 0.2g (1%) trans fat: 0g polyunsaturated fat: 0.1g monounsaturated fat: 0.2g cholesterol: 0.6mg (0%) sodium: 427mg (18%) potassium: 626mg (18%) carbohydrates: 17g (6%) dietary fibre: 0.8g (3%) sugar: 10g protein: 3.4g vitamin a: 255% vitamin c: 23% calcium: 2.7% iron: 7.2%

 

Meal Ideas

A typical Japanese meal consists of a main dish, a couple of side dishes, a soup and rice. I try to come up with a combination of dishes with a variety of flavours, colours, textures and make-ahead dishes.

Given that Simmered Pumpkin (Kabocha no Nimono) is a long-standing home-cooking dish and also a vegetarian dish, I match it with other long-standing home-cooking dishes which can be vegetarian.

The recipe for the Main includes tiny dried fish but to make it vegetarian, omit the fish or replace it with other vegetables. For the other dishes and Rice where Dashi Stock is used, use Konbu Dashi in Varieties of Dashi Stock to make the dish vegetarian.

  • Main: Kakiage (Mixed Vegetable Tempura) – if you would like a bit more protein, Tempura with prawns can be an alternative
  • Side dish 1: Simmered Pumpkin (Kabocha no Nimono) – today’s recipe, can be made ahead
  • Side dish 2: Cucumber and Seaweed Sunomono (Vinegar Dressing)
  • Soup: Miso Soup of your choice from Miso Soup Ingredient Combinations or your favourite ingredients
  • Rice: Gomoku Gohan (Japanese Mixed Rice) – you can make ahead up to cooking vegetables

Menu idea with Simmered Pumpkin (Kabocha no Nimono).

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Filed Under: All Recipes, Sides, Vegetables, Vegetarian

Reader Interactions

Comments

  1. Casey P says

    April 6, 2025 at 12:09 pm

    Hi Yumiko!

    I loved how you highlighted the process of preparing the pumpkin before cooking. Subtle but significant details that elevate the experience of Japanese Cooking – it’s all about the care factor.

    I thought you’d like to know that JAP Pumpkins are not Jap Pumpkins – as Jap is not short for Japanese, and in fact it is JAP as in J.A.P. as an acronym for Just Another Pumpkin.

    “It may be a false tale but it is said that the growers of this Pumpkin could not figure out a proper name for it, so they opted for the simple acronym name of JAP which stands for Just Another Pumpkin.”

    This is a little tidbit piece of trivia for your next dinner party – something I picked up years ago from a vegetable supplier.

    Funnily enough the association of pumpkin in Japanese Cuisine doesn’t help much in perpetuating this misnomer.

    And as such we should probably drop the ‘pumpkin’ and just call the JAPs, as the ‘pumpkin’ is already accounted for in the acronym.

    Reply
    • Yumiko says

      April 6, 2025 at 5:25 pm

      Hi Casey, yes, I am aware of J.A.P. pumpkin. I even had a concerning comments about me spelling it without dots. But at some of the grocery shops where I live, J.A.P. is also labelled as Japanese Pumpkin. It is not the same but I think it is the closest. E.g. butter nut pumpkin is nowhere near the Japanese pumpkin.

      Reply
  2. Julie says

    September 29, 2022 at 7:43 pm

    This was delicious, Yumiko! Thank you so much xo

    Reply
    • Yumiko says

      September 30, 2022 at 5:15 am

      Hi Julie, I am glad you liked it!

      Reply
  3. sandy moore says

    November 27, 2019 at 11:40 am

    Yum our Japanese friend cooked this pumpkin dish and bought it back to heat on a BBQ giving it a smoky roasted finish. Delicious!

    Reply
    • Yumiko says

      November 28, 2019 at 9:55 am

      Hi Sandy, I sounds delicious!

      Reply
  4. Karen Jones says

    November 27, 2019 at 2:02 am

    Hi Yumiko- San,

    Do you season the pumpkin before, during or after cooking?

    Arigato,
    Karen

    Reply
    • Yumiko says

      November 27, 2019 at 10:12 am

      Hi Karen, if you are asking about extra seasoning not mentioned in the recipe such as sugar, no I don’t. When it comes to simmering vegetables in Japanese cooking, you don’t normally season because the simmering sauce includes dash and other seasoning.

      Reply
  5. Joey & Quynh Mollica says

    November 11, 2019 at 6:41 am

    Hi Yumiko!
    Excellent recipe! My wife grew up in Viet Nam eating kabocha, but hadn’t had it in forever since she moved to the US. I overcooked it a bit (in my opinion) because I peeled off too much skin, but otherwise the flavor is perfect with the kombu-dashi.

    Thank you for taking the time to post this!

    Reply
    • Yumiko says

      November 11, 2019 at 8:48 am

      Hi Joey, I am glad to hear that your wife, and of course you, enjoyed the Kabocha.

      Reply
  6. George Foley says

    June 12, 2019 at 4:29 pm

    Hi Yumiko san,
    I have to thank you for this wonderful recipe on kabocha. I have cooked it a few times for my 94-year old Japanese mother, and she is impressed. Kabocha is one of her favourite dishes. She is getting a bit too old to cook for herself so I supply her evening meals. We live in Melbourne and my mother lives next door so it is easy for me to take in her meals every night.
    George

    Reply
    • Yumiko says

      June 12, 2019 at 7:42 pm

      Hi George, what a wonderful thing you do to your mother! You mom must be very pleased to see you every day. And I am so happy to hear that your Japanese mother was impressed with Kabocha no Nimono. That’s really great. Kabocha is a great food for not-so-young-anymore people like me and your mom.

      Reply

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Hi, I’m Yumiko!

I was born and raised in Japan and migrated to Australia with my family in 1981. I got tired of my kids constantly asking me for their favourite Japanese recipes, so I decided to collate them in one place so they can help themselves - and now you can too! Read More…

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