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    Home » Recipes » Japanese (Traditional)

    Updated: Jun 22, 2023 by Marc Matsumoto · 26 Comments

    Asari Miso Soup

    This Asari Miso soup (あさり味噌汁) contains only a handful of ingredients and yet the broth is ultra-flavorful, thanks to the Asari clams (Manila Clams).
    Recipe Pin

    Fishing aside, one of my favorite reasons for visiting japan as a kid was to dig for clams at low tide. For a 6 year old, there are few things more exciting than sinking your hands into a cool slurry of sand and coming up with a handful of clams that would later make it into a bowl of miso soup for breakfast.

    Those clams are known as Asari in Japan, but thanks to the popularity of Japanese oysters, they were introduced to the West Coast of the US and are commonly known as Manila clams in grocery stores. They have a wonderful briny flavor different from other varieties of clams which makes for a soup that's a refreshing change from your usual bonito and kombu based miso soup.

    It's also easier to make than most miso soups because there's no need to make dashi first. You start with water, and the hard-working mollusks turn it into a delicate broth. Miso, which is a fermented soybean paste, seasons the broth while packing it full of umami. Mushrooms add more flavor and texture, but you can really add just about anything you want (or leave them out all-together).

    📖 Recipe

    Asari Miso Soup

    No ratings yet
    Print Pin Discuss
    Prep Time 2 minutes mins
    Cook Time 5 minutes mins
    Total Time 7 minutes mins
    Yield 2 serving

    Units

    Ingredients 

    • 200 grams Manila clams (a.k.a. Asari clams)
    • 2 cups water
    • ½ package Japanese mushrooms (such as shimeji, enoki or nameko)
    • 1 ½ tablespoons miso (to taste)
    • 1 scallion (chopped)

    Instructions

    • The day before you plan to make your miso soup, add the clams and 1 teaspoon of salt to a bowl and add just enough water to cover the clams. This will make the clams open and release any sand they contain. The next day, rinse the clams
    • Add the mushrooms, clams and 2 cups of fresh water to a small saucepan and bring to a boil. Cook until the clams open (about 1-2 minutes).
    • Turn the heat down and add the miso, dissolving the paste in a ladle filled with a little soup first to avoid clumps. Because different types of miso vary in salinity, taste the soup and adjust the miso to taste.
    • Finish by adding the scallions and serve immediately.
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    Reader Interactions

    Comments

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      Recipe Rating




    1. the indolent cook says

      September 11, 2011 at 12:18 pm

      Clam-flavoured broth is delicious! That first photo is really calling out to me...

      Reply
    2. Darren Tran says

      September 11, 2011 at 6:30 pm

      Sounds great... need to try this!

      Reply
    3. cjbollinger says

      September 11, 2011 at 8:42 pm

      This looks simple, beautiful and very tasty.  I'll have to opt for whatever clams are available at our little 'eh' market, but definitely worth a go.

      Reply
    4. OKay says

      September 12, 2011 at 3:20 am

      do the shells impart much flavor? are they nutritious?

      Reply
    5. Marc Matsumoto says

      September 12, 2011 at 3:42 am

      Nope, the shells, don't impart any flavor or nutrients as far as I'm aware of. You could certainly remove the meat and serve just the meat in the soup if you like, but it's traditionally served with the shells.

      Reply
    6. sophist_roland says

      September 12, 2011 at 4:33 pm

      This was always my favorite miso soup to get served when I was living in Tokyo. Wish the midwest got some of those clams. I can't even get enoki mushrooms without paying an arm and a leg for them. Do you know of any easy to get substitutes for the manila/asari clams?

      Reply
    7. Marc Matsumoto says

      September 13, 2011 at 3:14 am

      There's a bunch of seafood suppliers online that aren't crazy expensive, try looking around online. https://www.ilovebluesea.com/ has Manila clams for $8.88 per pound.

      Reply
    8. Lagolden says

      September 15, 2011 at 12:05 am

      Do you scrub the outside of the clams first?  I have never cooked them so wonder?

      Reply
    9. Marc Matsumoto says

      September 15, 2011 at 12:18 am

      Nope, but you do want to soak them in salt water for a bit to get them to release any sand they may contain.

      Reply
    10. essay help says

      September 15, 2011 at 3:51 pm

      very cool pst! thanks alot for sharing!

      Reply
    11. Alice says

      November 11, 2011 at 8:27 am

      Should the water be cold, warm or hot when you put the clams in salted water to get rid of the sand?

      Reply
    12. Marc Matsumoto says

      November 15, 2011 at 11:47 am

      The water to soak should be cold.

      Reply
    13. Matka Shop says

      December 13, 2012 at 2:41 pm

      Looks Amazing

      Reply
    14. Raphael Clancy says

      January 11, 2013 at 1:16 am

      My local market usually has Manila clams and Enoki mushrooms. I decided to try this as a nice warm up after a day hiking in the mountains with some friends. But, when I hit the market, they had neither Asari nor Enoki. So, I made it with little neck clams and cremini mushrooms. I figured that the little necks would have a milder flavor, so I bulked up the stock with a little dried bonito and a piece of kombu, and it turned out great! Thanks so much for sharing the recipe.

      Reply
    15. pansy says

      April 24, 2013 at 7:08 am

      the pic on asari miso soup looks good. is there tomato in it as I saw something reddish?

      Reply
    16. Marc Matsumoto says

      April 24, 2013 at 11:56 am

      Nope, no tomatoes though that might make for a novel miso soup:-) Just Asari clams and Japanese mushrooms (nameko).

      Reply
    17. camila says

      May 11, 2013 at 10:39 am

      Hi Marc! what variety of miso paste do you use for miso soup? i bought hatcho and it didn't taste right, then I saw in the comments of another recipe that its not suitable for soup. which one of the other types (rice, barley, brown rice) is the best for a regular miso soup? also, is it possible to buy stock that is made with kmobu, bonito and whatever other fish stock ready? also, is most bonito out there full of msg or not?
      thanks!

      Reply
    18. Marc Matsumoto says

      May 12, 2013 at 11:59 am

      Hi Camila, hatcho miso is used for miso soup in certain parts of Japan, but it can have a rather strong flavor. What miso you use depends mostly on the region of Japan you're in. Personally I like yellow miso made with soybeans and rice (as opposed to soybeans and wheat) as the kind made with rice tends to be sweeter.

      Reply
    19. paganmist says

      July 07, 2013 at 11:02 pm

      Marc, I want to say thank you and express my appreciation for this beautiful site and these amazing recipes. As weird as it sounds, I feel like this site is actually a gift to the world. It's so obvious that everything here is presented with love and thought.

      I'm transitioning to a healthier way of eating, and finding healthy recipes that don't make me want to run and grab a burger isn't easy. Your site is helping with that, though.

      Thank you for sharing your artistic and culinary efforts with us, as well as your clear love of good food.

      Reply
    20. Marc Matsumoto says

      July 08, 2013 at 3:14 am

      Thanks Paganmist! It's my goal to make the preparation of tasty wholesome food accessible and fun for people of all skill levels, so I'm glad to hear you've found it helpful!

      Reply
    21. Elleanor Eng says

      September 30, 2013 at 5:59 pm

      Decided to give it a go, and it had a lovely homey taste. I'm used to the more aggressive flavors of Cambodian food, so I added kombu, bonito, and soy sauce. I just found your site, and I'm really excited to try all the recipes.

      Reply
    22. Jennifer McKay says

      December 30, 2013 at 4:05 pm

      can we substitute some of the water with sake?

      Reply
    23. Marc Matsumoto says

      December 30, 2013 at 11:57 pm

      Yep, absolutely:-)—
      Sent from Mailbox for iPhone

      Reply
    24. Jennifer McKay says

      December 31, 2013 at 1:09 am

      excellent!

      Reply
    25. Ariel Isble says

      March 18, 2014 at 9:14 am

      I loved this in Japan. So good.

      Reply
    26. zeusdsk says

      July 15, 2014 at 8:21 pm

      All of the above are authentic and and delicious. I miss my authentic miso soup with mempachi.

      Reply

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