I’ve always been a huge fan of Japanese seaweed salad! With its tangy and slightly briny taste, it makes for a tasty and refreshing side. What’s also great is how easy it is to make at home. My seaweed salad recipe comes with a soy and sesame dressing and is ready in about 15 minutes.

Seaweed Salad

If you are wondering if this recipe is the delicious tart and nutty seaweed salad found in most Japanese restaurants across the globe, the answer is yes! This isn’t sunomo, which is a dish made of seaweed and sliced cucumber dressed in vinegar, but rather the colorful bowl of algae served with a soy sauce, rice vinegar, and toasted sesame oil dressing.

The level of acidity found in this seaweed salad is heaven for someone like me who thrives on tart and sour foods! It’s puckery sour and hits the spot whenever I want a dish that’s both punchy and refreshing. This seaweed salad never disappoints and only takes 15 minutes to make from start to finish.

dry algae

Ingredients

  • Seaweed: I recommend using a mixture of dried seaweed so there is more variety in texture and color. Some of the more seaweed used in kaisou salad are wakame, red and green tsunomata, seaweed stem, mafunori, and agar. No need to purchase them separately as mixed seaweed packages can easily be found in Japanese supermarkets (sometimes in Chinese grocery stores too). If you cannot find it, you can still make this salad using only wakame.
  • Toasted sesame oil: Make sure to use toasted sesame oil and not just regular sesame oil. That’s because the flavor of toasted sesame oil is much more concentrated and will give the vinaigrette a deep nutty taste.
  • Soy sauce: Use regular Japanese soy sauce if you can. Korean soy sauce and Chinese soy sauce are also okay.
  • Rice vinegar: Use plain rice vinegar to infuse tartness and a little fruitiness. Apple cider vinegar can be used as an alternative.
  • Mirin: Mirin has a slight sweetness and is rich in umami. It helps balance the salty and acidic flavors of the dressing.
  • Sugar: A little sugar is added to also balance the salty and acidic flavors.
  • Ginger: Only fresh ginger should be used to infuse the dressing with some warmth and a little heat.
  • Ground sesame seeds (optional): You can buy ground sesame seeds or crush them yourself. Simply use a pestle and mortar or a Japanese sesame grinder (that’s what I use) to grind them.

Variations

  • Make it spicy: Top the salad with some thinly sliced dried red chilis, or a sprinkle of ichimi togarashi.
  • Make it sweet: Add a little extra sugar to the dressing or a drop of honey for sweetness and a floral element.
  • Make it creamy: Add 2 to 3 tablespoons of Kewpie mayonnaise or regular mayonnaise to the dressing.
  • Make it more filling: Add sliced cucumber, cubed tofu, and/or crab sticks. Or top it with some canned tuna or shredded chicken.
  • Add some greens: Add crispy lettuces leaves to lighten up the salad and make it more interesting texture wise.
dry algae

How to Make It

  1. Make the seaweed salad dressing by whisking the sesame oil, soy sauce, rice vinegar, mirin, sugar, and ginger.
  2. Place the dried seaweed in a bowl of water and let pieces soak for 5 to 10 minutes – or follow to the directions on the package.
  3. Drain the seaweed well and gently squeeze out the excess water using your hands.
  4. Toss the seaweed with the dressing and add the ground sesame seeds. Toss again and enjoy!

Expert Tip

Drain and rinse the seaweed a few times: Once the seaweed is rehydrated, drain and rinse it a few times in cold water to remove some of the fishy smell. Some seaweed can have a strong odor that can unfortunately ruin the overall dish if it’s not handled properly. Using cold water will also make the salad taste more fresh.

salad dressing

Storage

  • Seaweed salad doesn’t keep well because the texture of algae gets slimy after it’s been rehydrated for a few hours. For the freshest salad I recommend serving it within 2 hours after it’s been mixed with the dressing.
  • Make ahead: The dressing can be made ahead of time and keeps well in the fridge for up to 1 week.

What I Like To Serve With My Seaweed Salad

Japanese seaweed salad should only be enjoyed in small quantities because of its high levels of iodine, which can cause problems with the thyroid. Because of that, it’s usually served as a side dish with other traditional Japanese foods. I personally think it pairs well with just about anything! Some of my top dishes that I like to serve with seaweed salad are:

Other recipes using seaweed that you might like: Wakame and vermicelli soup, traditional tofu and seaweed miso soup, sunomo (Japanese cucumber vinegar salad), Korean seaweed soup (tofu miyeok-guk), hijiki salad, bukkake udon, and homemade furikake.

seaweed salad

Frequently Asked Questions

Is this salad vegan?

Yes, this salad is 100% vegan.

Is this salad gluten-free?

No, this salad isn’t gluten-free because the dressing is made with ingredients that contain gluten. However, it can easily be made gluten-free! Instead of regular soy sauce, use gluten-free soy sauce or tamari, and make sure that the mirin and rice vinegar used is also gluten-free (some of them are made in facilities where cross contamination may happen, so it’s always good to check the label or information about the brand).

I cannot find toasted sesame oil. Is there another oil I can use?

Yes you can but keep in mind that the overall taste will not be exactly the same. Perilla seed oil and walnut oil can be used as substitutes, and make sure to use plenty of ground sesame seeds to increase the level of nuttiness!

Japanese seaweed salad

Did you like this recipe? Are there changes you made that you would like to share? Share your tips and recommendations in the comments section below!

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kaisou salada

Seaweed Salad (海藻サラダ)

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  • Author: Caroline Phelps
  • Prep Time: 10 minutes
  • Cook Time: 0 minutes
  • Total Time: 10 minutes
  • Yield: 2 sides 1x
  • Category: Salads
  • Method: Mixing Bowl
  • Cuisine: Japanese
  • Diet: Vegetarian
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Description

This Japanese seaweed salad is tangy, savory, and refreshing, and makes a delicious side to other traditional Japanese dishes.


Ingredients

Scale
  • 15g mix of different types of dried seaweed such as wakame, red and green tsunomata, mafunori, and agar (mixed dried seaweed bags are sold at Japanese supermarkets), or just wakame
  • 1 teaspoon ground sesame seeds (optional)

Dressing

  • 1/2 tablespoon toasted sesame oil
  • 1 1/2 tablespoon soy sauce
  • 2 tablespoons rice vinegar
  • 1 teaspoon mirin
  • 1 teaspoon sugar
  • 1 tablespoon ginger, peeled and grated

Instructions

  1. Make the dressing: Whisk all the ingredients for the dressing in a bowl and set aside.
  2. Rehydrate the seaweed: Place the dried seaweed in a bowl of cold water and soak for 5-10 minutes (follow the instruction on the package).
  3. Rinse the seaweed: Drain and rinse well under cold water. Drain again and squeeze out excess water from the seaweed using your hands.
  4. Mix the salad: Place the seaweed in in a bowl and pour the dressing on top. Toss well and sprinkle ground sesame seeds on top. Serve on its own or topped with slices of fresh cucumber and tomato.

Notes

Seaweed salad tastes best when eaten fresh because seaweed gets slimy over time. Eat within 2 hours for the freshest taste and texture. 


Nutrition

  • Serving Size: 1 bowl
  • Calories: 71
  • Sugar: 3.9g
  • Sodium: 407.3mg
  • Fat: 4.3g
  • Saturated Fat: 0.6g
  • Unsaturated Fat: 1.8g
  • Trans Fat: 0g
  • Carbohydrates: 6.5g
  • Fiber: 0.3g
  • Protein: 1.5g
  • Cholesterol: 0mg
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Caroline Caron Phelps

Meet The Author: Caroline Phelps

Caroline Caron-Phelps is a recipe creator, food blogger, and photographer. She showcases delicious, authentic Asian recipes, especially Japanese, Korean, and Chinese, with beautiful photography, easy-to-follow instructions, videos, and practical recipe variations. Caroline has been featured on Bon Appetit, Shape Magazine, Self, Today Show, and more.

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Questions and Reviews

  1. Can you list the ingredients and proportions in the seaweed mix? I would rather make it myself with seaweeds I have at home. Thanks

  2. There is a way to make the Amazon link use the Amazon store for the destination country. I don’t know how to do it, I am not a blogger but that serve your readers well and you still get benefit. The link for the salad mix went to the USA store. I am in Canada. I can see only products that ship to Canada. The link showed one item that was not available. On Amazon.ca, the only salad available is for aquarium fish. I have no access to Japanese or Asian markets. No Thrive store either. iHerb lists the salad but it is unavailable. All the remaining seaweed items seem to be snacks; I am not hopeful but I asked to be notified when the salad comes in.

  3. This is a lovely recipe, and one I would definitely try. This particular combination sounds delicious. Thanks for sharing!