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Homemade Instant Miso Soup 即席味噌汁

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    Meal prep Homemade Instant Miso Soup ahead of time and take it to your office or school! It takes less than 10 minutes to prepare, and you can enjoy miso soup instantly at any time.

    Homemade instant miso soup served on the table.

    For many Japanese, a bowl of delicious miso soup is a daily necessity for the soul. Today I want to introduce Homemade Instant Miso Soup (即席味噌汁) for those who love miso soup.

    Traditional Way of Making Miso Soup

    You most likely have cooked miso soup before, but just in case you haven’t, the process is pretty simple:

    1. Make dashi (Japanese soup stock). I have a detailed dashi guide, explaining different types of dashi and how to make them. Unlike chicken or beef stock, Japanese dashi is SUPER easy to make and takes just 15-20 min total from scratch.
    2. Add ingredients of your choice such as tofu, wakame seaweed, etc.
    3. Add miso.

    That’s it. And here are some of popular miso soup recipes on Just One Cookbook.

    But what if you don’t have 20 minutes to make homemade dashi? How about the time you wish to drink miso soup outside of the home at the office or school? And what if you want to drink miso soup right now? Enter Instant Miso Soup.

    Homemade instant miso soup in a mason jar.

    Make Instant Miso Soup at Home

    My Instant Miso Soup is the solution for those of you who are too busy and always on the go but still crave the warm comforting soup to soothe the soul.

    Let’s go over 4 things you need for making Homemade Instant Miso Soup.

    Mason Jars with Plastic Caps

    1. Containers

    When I was looking for an efficient way to make individual miso soup packages, I figured that mason jars would work the best to serve as the portable single-serving container. It’s convenient and environmentally-friendly.

    I chose 1-pint (2 cups/473 ml) mason jar as the Instant Miso Soup container because you will have plenty of space on top to hold the jar safely when hot water fills up to half of the jar. It also provides extra room if you want to add more ingredients.

    To cap the jars, you can purchase these plastic caps for easy storage and cleanup.

    Dashi Powder

    2. Dashi – Japanese Soup Stock

    It’s not a true miso soup unless you use dashi. And please do not consider substituting with vegetable or chicken stock. If you are vegetarian/vegan, your dashi option is Kombu Dashi.

    Realistically, to make dashi instantly, we have two choices.

    1. Use dashi powder (buy at Japanese grocery stores or on Amazon). You can find kombu dashi powder as well. One thing to note, I always use additive-free or msg-free dashi powder. If you are sensitive to MSG please check the dashi powder ingredients before purchasing.
    2. Use miso that already includes dashi (see next).

    Hikari Miso with Dashi

    3. Miso

    The great thing about miso is that you can consume it straight out of the tub/package. It’s quite salty by itself, but you don’t need to cook it.

    For homemade instant miso soup, using miso that already contains dashi, such as “Maru-Yu” Dashi Iri Yuki Miso (Organic) from Hikari Miso above, becomes extremely handy.

    If you can’t find miso with dashi in it, simply use your favorite kind of miso and add dashi powder that I mentioned.

    I’ve been partnering with Hikari Miso® monthly to share various miso recipes on Just One Cookbook. Personally, I’ve been using their miso for over a decade (I discovered the brand after I got married), and it’s been fun trying out varieties of their amazing miso. Depending on the availability at your grocery store, there are all different types of miso from Hikari Miso (Learn about types of miso here).

    Hikari Miso 2019 | Easy Japanese Recipes at
    Various miso types from Hikari Miso® (imported from Japan)
    Hikari Miso Organic
    Organic Miso series from Hikari Miso®

    Let’s Talk about Miso to Water Ratio

    If you have used different brands and types of miso in the past, you know each miso tastes pretty different. As I explained in my Homemade Miso recipe/post, the amount of salt used for each miso varies. Hence, you have to adjust the amount of miso depending on the brand/type of miso and your own preference.

    In Japan, the general rule of thumb for miso to water ratio is 1 Tbsp miso to 200 ml water. The typical size of the miso soup bowl contains about 200 ml liquid. When you buy a new tub of miso, taste a tiny bit and see how the new miso taste compared to the previous one.

    And finally, the last thing you need for Homemade Instant Miso Soup…

    Aburaage (deep fried tofu pouch)

    4. Miso Soup Ingredients

    For today’s recipe, my focus was to store the Instant Miso Soup in the refrigerator as long as possible, at least enough to last the whole week. Therefore, keeping the ingredients dry was the most important factor. My miso soup ingredients include:

    • Aburaage (deep-fried tofu pouch)
    • Green onion/scallion
    • Dried wakame seaweed

    I chose relatively dry/drier ingredients so that ingredients won’t go bad in the refrigerator. The goal is to make Homemade Instant Miso Soup accessible, and ideally, you don’t have to prepare them too frequently.

    Homemade instant miso soup in mason jars.

    However, if you plan to consume your Homemade Instant Miso Soup in 1-2 days, you can add:

    • Tofu
    • Blanched greens (spinach, snap peas, bok choy, edamame, etc)
    • Mushrooms
    • Or any raw ingredients that go well with miso soup

    What’s your favorite miso soup ingredients?

    Homemade Instant Miso Soup in mason jars, ready for hot water.

    Store-bought vs. Homemade Instant Miso Soup

    Lastly, I also want to mention that you can purchase Instant Miso Soup packages at Japanese and Asian grocery stores. I’ve tried different brands in the past (my lazy cooking days in college) but I can truly say I like the ones from Hikari Miso most (Amazon sells this less-salt one). Their miso is really good, maybe that’s why.

    Instant Miso Soup by Hikari Miso

    In any case, I still recommend making your own homemade instant miso soup. The main advantage of homemade soup is that it’s MSG/additive-free, you can use your favorite miso, and it’s totally customizable!

    Homemade instant miso soup in a mason jar on the office desk.

    Homemade Instant Miso Soup On-the-Go

    Take your homemade instant miso soup to your work or school. All you need is hot water. My kids grab them and make their own instant miso soup for breakfast (my babies have grown up!).

    As I work from home, I usually take one for a mid-morning snack (after drinking Japanese Iced Coffee Mr. JOC makes every morning) to avoid snacking. Miso soup is so comforting and I hope you enjoy Homemade Instant Miso Soup any time of the day!

    Homemade instant miso soup in mason jars.

    Japanese Ingredient Substitution: If you want to look for substitutes for Japanese condiments and ingredients, click here.

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    4.86 from 7 votes
    Homemade instant miso soup in mason jars.
    Homemade Instant Miso Soup
    Prep Time
    15 mins
    Total Time
    15 mins
    Meal prep Homemade Instant Miso Soup ahead of time and take it to your office or school! It takes less than 10 minutes to prepare, and you can enjoy miso soup instantly any time of the day!
    Course: Soup
    Cuisine: Japanese
    Keyword: meal prep, miso, miso soup
    Servings: 5 Instant Miso Soup Jars
    Author: Namiko Chen
    For Miso Soup Ingredients
    To Make Miso Soup
    • 200 ml boiling water
    1. Gather all the ingredients. If you use miso which contains dashi in it, skip dashi powder. If your miso doesn’t contain dashi, then you will need to prepare dashi powder. The one I use in this recipe is MSG-free/additive-free. You can purchase a similar one on Amazon or Japanese grocery stores.

      Homemade Instant Miso Soup Ingredients
    2. Boil roughly 2 cups (460 ml) water and pour over both sides of the aburaage (deep-fried tofu pouch). The hot water help remove some of the oil from the production process. Once it’s cool to touch, squeeze tightly or pat dry with a paper towel.

      Homemade Instant Miso Soup 1
    3. Cut in half lengthwise and cut into thin strips widthwise.

      Homemade Instant Miso Soup 2
    4. Cut the green onions in half and cut into thin rounds. Pat dry the chopped green onions with a paper towel to remove excess moisture.

      Homemade Instant Miso Soup 3
    To Assemble
    1. Prepare 5 mason jars and caps.
      Homemade Instant Miso Soup 4
    2. If you are using miso without dashi: Scoop 1 Tbsp miso and add to each jar. Then add ½ tsp dashi powder to each jar.

      Homemade Instant Miso Soup 5
    3. If you are using miso with dashi: Scoop 1 Tbsp miso and add to each jar.

      Homemade Instant Miso Soup 6
    4. Divide and add the aburaage strips and green onion into the 5 jars.
      Homemade Instant Miso Soup 7
    5. Divide and add dried wakame seaweed into the 5 jars. Close the lid.
      Homemade Instant Miso Soup 8
    6. Store in the refrigerator for up to 6 days. If you make them on Sunday, consume by Friday.

      Homemade Instant Miso Soup 9
    7. Pack in the insulated lunch box and you're ready to go! I usually drink one of these in mid-morning as a snack.

      Homemade Instant Miso Soup 10
    To Enjoy Instant Miso Soup
    1. Pour boiling water to 200 ml mark on the jar and mix well to let it dissolve into the broth. It’s the same amount of liquid as Japanese miso soup bowls. Enjoy!

      Homemade instant miso soup in mason jars.

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