Vegan Miso Soup

By Alexandra Caspero on February 20, 2019

Packed with immune-boosting functional foods like miso, ginger, and mushrooms, this vegan miso soup is one not to miss during the winter months.
Is Miso Soup Vegan? This one is! Made with plant-based umami kombu, shiitake mushrooms and miso. 

I’m making you a miso soup that’s hearty enough for a meal! Yup, another miso soup. I just shared this chicken-less miso soup with you a few weeks ago, but I also wanted to have a version that was more traditional.

My family loves a good miso soup and I almost always order a cup whenever we head out for sushi. Miso soup, seaweed salad and a roll is one of my favorite meals, especially when I’m traveling.

The only downside about miso soup is that it’s always an appetizer. Delicious as a first course but definitely not filling enough to make a meal. Well, we’re changing that today.

This vegan miso soup has bok choy, shiitake mushrooms, tofu and chewy buckwheat noodles. We’ve been enjoying this one over and over again for a light dinner and it’s so delicious, Van loves it too. I drain the broth off it and let him slurp down the noodles.

vegan miso soup

Is Miso Soup Vegan? 

This miso soup is! However, not all miso soups are vegan, especially if you are enjoying them at a Japanese or sushi restaurant. Most miso soup contains bonito flakes, which are dried tuna flakes that provide umami flavor. However, you don’t have to use bonito flakes for umami flavor as miso, shiitake mushrooms and kombu are all vegan sources of umami flavor. 

Miso is a Good Probiotic 

Miso soup is made with (you guessed it) miso, which is a traditional Japanese seasoning made from fermented soybeans. Fermented foods, like kimchi, yogurt, kombucha, pickles, tempeh, and miso, contain good-for-you, naturally occurring bacteria, also known as probiotics.

Probiotics help to restore the naturally occurring bacteria in your gut by kicking out the bad bacteria (that can accumulate from a processed diet, high in fat and sugar) and resetting it with the good stuff. Probiotics have a whole host of health benefits – everything from boosting the immune system to soothing digestive upset, to supporting metabolism.

And if probiotics weren’t enough of an immune system boost for you, this soup is also packed with fresh ginger and shiitake mushrooms, both of which have immune-boosting properties. To retain all of the probiotic benefits, make sure not to overheat your miso. It’s why I recommend removing some of the broth to whisk the miso paste into, then return it back to the soup off-heat. Cooking the miso will diminish the naturally occurring fermented bacteria and we want to keep as much as we can! 

What’s the difference between red miso and white miso paste? 

White Miso is made from soybeans that have been fermented with rice; the color can range from white to a light yellow and white miso has a definite sweet taste. I usually use white miso in my vegan miso soup. Yellow miso is also made from soybeans and has been fermented with barley and sometimes rice. It’s got a mild, early flavor and is amazing in miso soup as well! 

Red Miso is typically fermented with barley or other grains and has a longer fermentation period. It contains more of a deep umami flavor than white or yellow miso; I usually only use red miso in sauces but you can use it in miso soup. Just know that it will create a deeper color and a richer miso taste. 

is miso soup vegan

Have I mentioned this soup is deliciously comforting? The miso packs in a ton of flavor that is complemented with the spicy ginger, the mild bitterness of the green onion and bok choy.  Plus, it’s super satisfying with the meaty texture of the mushrooms, protein-packed tofu, and fiber-packed buckwheat soba noodles.

You can find kombu online or in Asian grocery stores/specialty stores. I grab mine at Whole Foods!

If you try this recipe, let me know! Leave a comment, rate it, and tag your Instagram photos with #delishknowledge . I absolutely love seeing your creations. Happy cooking! 


Vegan Miso Soup

  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 35 minutes
  • Yield: 6 servings 1x
  • Category: Soup, Stew, Dinner, Entree, Main
  • Method: stovetop
  • Cuisine: Asian


Packed with immune-boosting functional foods like miso, ginger, and mushrooms, this vegan miso soup is one not to miss during the winter months.

  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 35 minutes
  • Yield: 6 servings 1x
  • Category: Soup, Stew, Dinner, Entree, Main
  • Method: stovetop
  • Cuisine: Asian
  • Author: Alex Caspero
  • Prep Time: 10 minutes
  • Cook Time: 25 minutes
  • Total Time: 35 minutes
  • Yield: 6 servings 1x
  • Category: Soup, Stew, Dinner, Entree, Main
  • Method: stovetop
  • Cuisine: Asian


For the Dashi (broth):

  • 8 cups filtered water
  • 2 strips kombu
  • 3 dried shiitake mushrooms
  • 3-inch piece of ginger, peeled, and sliced into thin coins

For the Miso Soup

  • 1 cup reserved Dashi
  • 1/2 cup brown rice miso
  • 8oz buckwheat soba noodles
  • 2 cloves garlic, minced
  • 1 tablespoons soy sauce
  • 3.5oz shiitake mushrooms, stems removed and thinly sliced
  • 68 kale or bok choy leaves, stems removed, and roughly chopped
  • 2-inch piece of ginger, peeled and grated
  • 7 oz extra firm tofu, cut into 1-inch cubes
  • 34 green onions, finely chopped, light and dark green parts only


  1. For the Dashi (broth): Fill a large pot with water and add kombu, dried mushrooms, and ginger. Turn heat on to medium and let cook until just before the water begins to boil. Turn off the heat and remove the kombu, mushrooms and ginger with a slotted spoon.
  2. For the Miso Soup: While the dashi is still hot, reserve about 1 cup and mix with the miso in a bowl until miso is smooth consistency, free of any lumps.
  3. In a separate pot, cook the soba noodles according to the directions on the package (about 7 minutes in boiling water).
  4. Continue to heat the dashi over medium heat and add the garlic, kale/bok choy, mushrooms, ginger, and tofu. Let cook until kale begins to soften but before it gets too wilted, about 5-10 minutes. Turn off heat and whisk back the reserved miso broth.
  5. Separate the soba noodles into bowls for serving. Pour the miso soup over the noodles. Garnish with green onion.


  • Note: If you have extra time and want to make a more flavorful Dashi, soak the kombu in the pot of water for about 3 hours before heating it with the other ingredients.
  • I know you can technically slice the dried mushrooms after they have been cooked in the broth and add back to the soup, but I really dislike the flavor of cooked from dried mushrooms. Therefore, I add fresh ones!

did you make this?

Tag @delishknowledge on Instagram and hashtag it #delishknowledge

More Vegan Soup Recipes To Try: Vegan Chicken Noodle Soup, Miso Chicken-Less Soup, Tuscan Kale Soup, Vegan Cream of Broccoli Soup


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Meet Alex Caspero

Alex Caspero is a Registered Dietitian, New York Times Bestselling Plant-Based Chef and mom of two. She aims to cut through the nutrition noise by providing real-life, nourishing tips for body and mind. Learn more about Alex.

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    1. Kelly
      November 19, 2019 AT 9:55 am

      My favorite cold-weather soup recipe! So easy to make and super flavorful.

    2. Kimberley Pereda
      February 25, 2019 AT 6:53 pm

      That is just what I need right now. I didn’t know about not boiling the miso. Now I know. The finished product looks delicious. Thank you so much. Thumbs up.

    3. Jan Michelle Encinareal
      February 24, 2019 AT 5:36 am

      Vegan soup is one of the recipe I can cook. Perfect in any kind of occasion which enhance the appetizer of my guest. Of course, it is also perfect for my home menu. My kids love it.

    4. Leslie
      April 9, 2018 AT 10:55 am

      Delicious! I used 3 kinds of dried mushrooms, and replaced the tofu and kale with napa cabbage. YUM!!! Thanks so much for the recipe.

      1. Alex
        April 9, 2018 AT 12:32 pm

        Awesome! Glad you liked it!

    5. Emily @ Zen & Spice
      January 15, 2015 AT 12:35 pm

      This looks simply amazing! I never really knew how miso soup was made, now I know 🙂

    6. Jessica @ Nutritioulicious
      January 15, 2015 AT 12:17 pm

      yum, yum, yum! and Umami!

    7. Robin at Robinbite
      January 15, 2015 AT 8:27 am

      That looks Sooooo good right now! I’m all things soup since the cold weather and this is a great addition…..

    8. Liz_MealMakeoverMom
      January 15, 2015 AT 7:01 am

      Wow. This looks amazing. I haven’t used some of those ingredients before so I may be in for a fun trip to HMart!