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Home ► Recipes ► Pescatarian

Corn Potage

Updated: 01.28.25 | Marc Matsumoto | 10 Comments

5 from 6 votes
Corn Potage (コーンポタージュ) is a French-influenced Japanese corn soup that's rich, creamy and ultra-smooth. My version is made with just a handful of ingredients with loads of umami accented by the natural sweetness of the corn.
Recipe
Loaded with fresh sweet corn in a rich velvety soup, this Japanese Corn Potage comes together from just a handful of ingredients. Serve it hot or chilled.

Summer is in full swing, and that means it's corn season! Although I love all the bounties of summer, corn may be my absolute favorite. It's fantastic boiled, grilled, or even shucked and turned into salad. Its juices are also loaded with glutamic acids which makes it a fantastic base for soups like this Japanese corn soup, or Corn Potage(コーンポタージュ).

Jump to:
  • What is Corn Potage?
  • How did Potage end up in Japan?
  • Easy Corn Potage
  • 📖 Recipe
  • Comments

What is Corn Potage?

Potage (pronounced poh-tahj) was originally a medieval French soup made from vegetables cooked until they formed a thick porridge. With many people keeping small kitchen gardens at the time, it was made from whatever vegetables were ready to harvest. For this reason, to this day, small vegetable gardens are known as Potager. Though this hearty soup seems to have fallen out of favor in Europe, it's found an unlikely home in Japan.

How did Potage end up in Japan?

Similar Western style soups were introduced to Japan as early as the time of Francis Xavier, but it wasn't until the beginning of the Meiji Period about 150 years ago that yōshoku (洋食), or western-style food began its ascent towards the mainstream.

Along with other yōshoku favorites like Hamburg Steak, Curry Rice, and Tonkatsu, Potage rode this wave of popularity into the hearts of the Japanese masses. Because the Japanese traditionally consumed miso soup along with their rice, it was a natural transition to Corn Potage as people moved from rice to toast for breakfast.

These days, the soup is so popular that you can find it sold in cans from vending machines, and Corn Potage flavored potato chips and rice crackers are a thing. In 2012, things reached a new level of craziness when a popular popsicle brand called GariGariKun (ガリガリ君) released a Corn Potage flavored popsicle!

Corn Potage is a rich and flavorful soup that comes together from just a handful of summer ingredients.

Easy Corn Potage

The traditional way of making this new classic is to cook the corn in chicken or vegetable stock before pureeing and straining it. It's then thickened with a roux before being finished off with cream. It's a lot of work, which is why most people turn to just-add-water soup mixes. I wanted to see if I could simplify the number of ingredients as well as the process without sacrificing the rich taste or velvety smooth texture. I found a few tricks for my Japanese Corn Soup recipe that cut the amount of work in half, but don't sacrifice any of the rich, creamy texture and deep flavor of the original.

The Broth

Most corn potage recipes in Japan call for adding chicken or vegetable stock as a base. I've found that between the corn and partially caramelized onions, there is so much umami in my Corn Potage recipe that there's no need to use a stock. This allows you to add milk as the only liquid, which in turn eliminates the need to add cream at the end.

Thickening the Potage

In Japan, potage is usually thickened with a flour and butter roux, but this adds both time and an extra pan to clean. It also adds gluten, an ingredient that many of us avoid. I wanted to take my corn potage recipe back to its French roots and use vegetables to thicken it. Specifically, I chose to use potatoes as they cook quickly, and the starch they contain thickens the soup nicely without adding any off flavors.

Puréeing the Potage

Initially, I was hoping to forgo straining the soup by puréeing it in a high-speed blender. With enough time, a Vitamix will get the soup fairly smooth; however the finished potage has a vaguely gritty texture as the corn skins can't be fully pulverized. If you need to save time or want to eat the extra fiber, this is an option. However, if you want to get your soup as smooth as possible, it's better to blend the soup just long enough to puree the corn, then strain the skins out with a fine-mesh sieve such as a tea strainer.

This satiny smooth Corn potage gets its flavor from loads of sweet summer corn cooked together with potatoes for thickness.

How to make Japanese Corn Potage

As for the order of operations, I'd initially planned to caramelize the onions and then purée it with the raw corn, potatoes, and milk before heating it to thicken the soup. In theory, this would have made the mixture easier to strain once puréed since it would be less viscous. Sadly, reality doesn't always cooperate, and the mixture curdled when it was heated.

It turns out that corn is slightly acidic, which causes the proteins in the milk to denature when heated. I thought about trying to bring the mixture to a more neutral pH using baking soda, but given that the pH of corn varies, it's simpler to cook the mixture before puréeing and straining it.

Plant-based Corn Potage

I'll work on a proper vegan corn potage at some point, but for now, if you want to make this plant-based, replace the butter with olive oil, and swap the dairy milk with your favorite plant-based milk. You can add a bit of nutritional yeast to both the soup and the croutons to amp up their umami.

📖 Recipe

Loaded with fresh sweet corn in a rich velvety soup, this Japanese Corn Potage comes together from just a handful of ingredients. Serve it hot or chilled.

Corn Potage (Japanese Corn Soup)

5 from 6 votes
Print Pin
Prep Time 5 minutes mins
Cook Time 20 minutes mins
Total Time 25 minutes mins
Yield 6 servings

Units

Ingredients 

For corn potage

  • 1 tablespoon cultured unsalted butter
  • 100 grams onion (½ finely diced)
  • 600 grams corn (3 ears)
  • 150 grams potato (1 small potato, peeled & thinly sliced)
  • 4 cups milk
  • 1 teaspoon salt
  • parsley (for garnish)

For buttered croutons

  • 1 tablespoon cultured unsalted butter
  • 2 slices sandwich bread (cut into ¼-inch cubes)
  • salt

Instructions

  • Add the butter and onions to a pot over medium heat and sauté until the onions are just starting to brown (about 10 minutes).
    Sauteed onions adds flavor to this simple corn potage.
  • If you’re using fresh corn, use a sharp knife to remove the corn from the cob. Use the back side of your knife to scrape any remaining bits of corn off the cob.
    Corn removed from cobs for makoing corn potage soup.
  • When the onions are ready, add the corn, potato, milk, and salt to the pot and simmer until the potatoes are tender (about 10-15 minutes)
    Fresh corn and potatoes cooking in milk to make a Japanese Corn Potage.
  • While the soup is cooking, make the croutons by melting the butter in a pan over medium heat and then adding the cubed bread. Toss to coat with the butter and then sprinkle with salt and pepper. Continue tossing until the bread is crisp and golden brown.
    Frying croutons in butter as a topping for corn potage.
  • When the potatoes are tender, pour the mixture into a heat-safe blender. Secure the lid tightly and hold a thick dishcloth firmly over the blender(this is very important as the sudden release of steam will make the lid fly off and send hot soup flying all over the kitchen).
  • Start the blender on low and gradually turn up the speed until the soup is pureed.
    Corn potage soup blended in a Vitamix blender.
  • Clean out the pot and pass the soup through a fine-mesh strainer. Press on the solids with the back of a spoon to get as much of the soup out of them as possible. Reheat the soup if needed and serve the Corn Potage garnished with the croutons and chopped parsley.
    Straining pureed corn potage removes the skins from the corn resulting in a velvety smooth soup.
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Nutrition Facts

Calories • 271kcalCarbohydrates • 37gProtein • 10gFat • 10gSaturated Fat • 5gCholesterol • 26mgSodium • 535mgPotassium • 569mgFiber • 3gSugar • 13gVitamin A • 645IUVitamin C • 9.6mgCalcium • 220mgIron • 1.6mg

Comments

    5 from 6 votes (3 ratings without comment)

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    Recipe Rating




  1. Danielle says

    April 05, 2025 at 12:54 am

    5 stars
    Delicious! I did modify a bit- using an immersion blender and not straining because I hate dishes, ha. The immersion blender did work pretty well for a slightly rustic result, but if someone wants to try it themselves, straining would achieve a more authentic, delicate pottage.

    Reply
    • Marc Matsumoto says

      April 09, 2025 at 10:22 am

      Hi Danielle, I'm happy to hear you enjoyed it! Straining does improve the texture, but the upside of not straining is that you got a nice boost of fiber in your bowl of soup.

      Reply
  2. Nathaniel Sheehan says

    January 16, 2023 at 8:49 am

    This was a delicious recipe a bit bland for my taste so i added some pepper and some other seasoning but it was very delicious.

    Reply
    • Marc Matsumoto says

      January 16, 2023 at 10:13 am

      Hi Nathaniel, happy to hear you enjoyed it. This is often eaten for breakfast here in Japan so it's usually not spiced up very much, but that makes it the perfect canvas to paint on your own flavors. Glad you were able to make it work for you!

      Reply
  3. George says

    January 31, 2022 at 4:05 am

    5 stars
    Hi Mark
    Very Health and good Menu Concept.
    I Check several menu with Plant Base Concept, Apreciate so much your Share
    I have a kitchen in Guangzhou China (George's B Nordic Cuisine)
    We use New Nordic Cuisine Moviment Concept and Want make fusion of Japanese and European Taste as amazing combination and concept.
    We are concentrating in Nordic Salmon Gravlax and Swedish Meatball Dish as the Signature of our Bistro.
    From now Want add More Plant Base Recipe and Japanese Fusion Menu to our Health Concept as well
    With Mother Japanese, Father half Japanese and Chinese, Born in Brazil Touched with Several Food Culture want bring some new concept for the Cathering Field
    The reason we Choose New Nordic is not because I have a great skill in Nordic Cuisine, but just because the New Nordic Cuisine has similar concept of my mind in Environment, Health, Organic, Plant Base as the highlight spot.for now trend food moviment including fine dining not using gorgeous ingredients, but beautiful dish concept to not be coustly for everyone want enjoy a great dish.
    Apreciate so much your Menu and Concept as well.
    Hope in near future we can meet face to face.

    Thank you

    Reply
    • Kathy Stroup says

      October 21, 2022 at 3:51 am

      5 stars
      George, you are fascinating! I wish you great success in your restaurant venture!

      Reply
  4. Mark says

    April 09, 2020 at 10:31 am

    Hi Marc,

    It's Mark again! After making your curry I decided to make japanese corn soup from scratch so I wouldn't feel so guilty everytime i use those darn instant mixes. This recipe is bomb! It's so incredibly tasty and so much more natural tasting than the mixes. I did a few tweaks to make it milk free (I'm lactose intolerant so can't have milk but a little butter is fine). I used half a pack of soft tofu and 4 cups of soy milk as a substitute. The soft tofu when blended gave the soy milk more body similar to the consistency of milk. The soup came out incredibly silky smooth after straining. I tried the soup without straining and you're right....the skins are an issue - they seem impossible to pulverize finely. I'm hooked. Thank you!

    Reply
    • Marc Matsumoto says

      April 09, 2020 at 9:44 pm

      Hi Mark, glad to hear you enjoyed this one too. The skin on the kernels are almost all fiber, so even the best blender will still leave you with a gritty chalky texture unless you strain it out.

      Reply
  5. Richard says

    November 04, 2019 at 3:39 am

    Wow. Many of my favorite soups are very simple - they let the flavors of the ingredients shine through (like Roasted Tomato and Red Pepper... mmmm....) and this one is no exception. I've made it a couple of times since posting; the first time exactly as written, and the second time, I used a whole onion but then caramelized it fully. Lovely.

    My Vitamix did manage to get the texture to silky without straining... I was happy about that. So maybe if you're making this you'll get lucky and not have to strain it. Wonderful - Thank you, Marc!

    Reply
    • Marc Matsumoto says

      November 04, 2019 at 10:00 am

      Hi Richard, I'm glad to hear you enjoyed this. Thanks for taking the time to drop in an let me know. As for the Vitamix, I'll try it out next time, but when I did it before, it did get it smooth, but it still left a chalky texture than the version I lightly blended and strained didn't have. Maybe it was the corn that I used.

      Reply
Marc Matsumoto

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