Wakame Seaweed Soup

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This traditional Japanese soup combines rehydrated wakame seaweed with silken tofu in a fragrant dashi broth, creating a light yet satisfying bowl. The preparation is straightforward: soak the seaweed, simmer the broth, then add tofu and seasonings including white miso and soy sauce. The entire process takes just 20 minutes, making it an ideal choice for busy weeknights or when you need something warming and nourishing without heavy preparation.

The soup delivers essential minerals from the seaweed while remaining low in calories. You can easily customize it by adding mushrooms, spinach, or carrots. It pairs beautifully with steamed rice or can stand alone as a light meal.

Updated on Mon, 26 Jan 2026 04:35:24 GMT
Homemade Japanese Wakame Soup with silken tofu cubes and green scallions in a clear dashi broth. Save to Pinterest
Homemade Japanese Wakame Soup with silken tofu cubes and green scallions in a clear dashi broth. | cozysaveurs.com

Wakame Soup is a nourishing Japanese classic that brings the essence of the ocean to your table. This seaweed-based soup is celebrated for being rich in iodine and essential minerals, featuring tender wakame seaweed and delicate silken tofu cubes swimming in a light, clear dashi broth. It serves as an elegant appetizer or a comforting side dish that embodies the simplicity of Japanese home cooking.

Homemade Japanese Wakame Soup with silken tofu cubes and green scallions in a clear dashi broth. Save to Pinterest
Homemade Japanese Wakame Soup with silken tofu cubes and green scallions in a clear dashi broth. | cozysaveurs.com

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The key to a great Wakame Soup lies in the quality of the dashi and the texture of the seaweed. By carefully rehydrating the wakame and gently incorporating miso paste at the very end, you ensure a broth that is both fragrant and deeply savory without being overpowered.

Ingredients

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  • Seaweed and Broth: 8 g dried wakame seaweed, 4 cups (1 liter) dashi stock (use vegetarian dashi for vegetarian option).
  • Vegetables and Tofu: 100 g silken or firm tofu (cubed), 2 scallions (thinly sliced).
  • Seasoning: 2 tbsp white miso paste, 1 tsp soy sauce (use gluten-free if needed), 1 tsp sesame oil (optional).

Instructions

1. Rehydrate the Seaweed
In a small bowl, soak the dried wakame in cold water for 5 minutes until rehydrated. Drain and set aside.
2. Simmer the Dashi
In a medium saucepan, bring the dashi stock to a gentle simmer over medium heat.
3. Add Tofu and Wakame
Add the cubed tofu and rehydrated wakame to the pot. Simmer for 2–3 minutes.
4. Blend the Miso
In a separate bowl, blend the miso paste with a ladle of hot broth until smooth. Stir the mixture back into the soup.
5. Final Seasoning
Add soy sauce and sesame oil (if using). Stir gently and heat for 1 more minute without boiling.
6. Garnish and Serve
Serve hot, garnished with sliced scallions.

Zusatztipps für die Zubereitung

To preserve the delicate enzymes and complex flavors of the miso paste, avoid bringing the soup to a full boil once the miso has been stirred in. Heating it gently for just a minute ensures the best taste and nutritional profile.

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Varianten und Anpassungen

For a strictly vegan version, use a dashi made from kombu and shiitake mushrooms. You can also boost the nutritional content by adding thinly sliced carrots, fresh spinach, or mushrooms during the simmering process.

Serviervorschläge

This soup is traditionally served alongside fluffy steamed rice or a fresh sushi platter. It is a light yet satisfying addition to any Japanese-inspired meal, providing a balanced umami finish.

A warm bowl of savory Wakame Soup garnished with fresh scallions, served alongside fluffy steamed rice. Save to Pinterest
A warm bowl of savory Wakame Soup garnished with fresh scallions, served alongside fluffy steamed rice. | cozysaveurs.com

With only 65 calories per serving, this Wakame Soup is a healthy, low-fat way to enjoy authentic Japanese flavors at home. Whether as a quick lunch or an elegant starter, it is a dish that provides comfort in every spoonful.

Recipe FAQs

What does wakame taste like?

Wakame has a mild, slightly sweet ocean flavor with a tender texture. When rehydrated, it becomes soft and silky, absorbing the flavors of the dashi broth and miso seasoning.

Can I use instant dashi instead of homemade?

Yes, instant dashi powder works well for this soup. Dissolve it in hot water according to package instructions. For vegetarian or vegan versions, choose kombu-based dashi powder instead of those containing bonito flakes.

Why shouldn't I boil the miso paste?

Boiling miso paste can destroy its beneficial probiotics and alter its delicate flavor. Always dissolve miso in a small amount of hot broth first, then stir it into the soup after removing it from direct heat or keeping it at a gentle simmer.

How long does wakame soup keep in the refrigerator?

The soup is best enjoyed immediately, but you can store leftovers in an airtight container in the refrigerator for up to 2 days. The wakame may continue to soften and expand slightly. Reheat gently without boiling to preserve the miso's qualities.

Can I freeze wakame soup?

Freezing is not recommended as the texture of tofu and wakame changes when thawed, becoming grainy or mushy. The miso flavor may also diminish. It's best to make fresh portions as needed.

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Wakame Seaweed Soup

Tender wakame and silken tofu in a delicate dashi broth, ready in 20 minutes for a light and nourishing Japanese-style starter.

Prep Time
10 minutes
Time to Cook
10 minutes
Time Needed
20 minutes
Created by Matthew Corbin


Skill Level Easy

Cuisine Japanese

Makes 4 Portions

Dietary Info Vegetarian-Friendly, No Dairy

What You’ll Need

Seaweed and Broth

01 Dried wakame seaweed, 0.28 oz
02 Dashi stock, 4 cups

Vegetables and Tofu

01 Silken or firm tofu, cubed, 3.5 oz
02 Scallions, thinly sliced, 2

Seasoning

01 White miso paste, 2 tbsp
02 Soy sauce, 1 tsp
03 Sesame oil, 1 tsp

Directions

Step 01

Rehydrate Wakame: In a small bowl, soak the dried wakame in cold water for 5 minutes until fully rehydrated. Drain and set aside.

Step 02

Heat Dashi Stock: In a medium saucepan, bring the dashi stock to a gentle simmer over medium heat.

Step 03

Add Tofu and Wakame: Add the cubed tofu and rehydrated wakame to the pot. Simmer for 2 to 3 minutes.

Step 04

Incorporate Miso: In a separate bowl, blend the miso paste with a ladle of hot broth until smooth. Stir the mixture back into the soup.

Step 05

Season and Finish: Add soy sauce and sesame oil. Stir gently and heat for 1 additional minute without boiling.

Step 06

Serve: Ladle the soup into bowls and garnish with sliced scallions. Serve immediately while hot.

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What You'll Need

  • Medium saucepan
  • Ladle
  • Small mixing bowl
  • Knife and cutting board

Allergy Info

Review all ingredients for possible allergens and check with a health expert if you’re unsure.
  • Contains soy from tofu, miso, and soy sauce.
  • Miso and soy sauce may contain gluten; verify labels for gluten-free certification.
  • Sesame oil may trigger allergies in sensitive individuals.

Nutrition Details (each serving)

Nutritional info is for reference and shouldn't replace advice from a healthcare professional.
  • Caloric Value: 65
  • Fat content: 2 grams
  • Carbohydrates: 7 grams
  • Proteins: 5 grams

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