Japanese wakame seaweed soup

Featured in: Easy Plates & Add-Ons

This traditional Japanese seaweed soup combines rehydrated wakame with silken tofu in a delicate dashi broth. The preparation involves soaking the dried seaweed, simmering it with cubed tofu, and finishing with white miso paste for umami richness. A splash of soy sauce and optional sesame oil adds depth, while fresh scallions provide a bright garnish. Ready in just 20 minutes, this light bowl offers essential minerals including iodine, making it an ideal starter or side dish for Japanese-inspired meals.

Updated on Mon, 26 Jan 2026 00:51:59 GMT
A close-up of warm Wakame Soup with tender seaweed, silky tofu cubes, and fresh green scallions in a savory dashi broth.  Pin this
A close-up of warm Wakame Soup with tender seaweed, silky tofu cubes, and fresh green scallions in a savory dashi broth. | platesignal.com

Experience a comforting taste of Japan with this nourishing Wakame Soup. Rich in iodine and essential minerals, this delicate dish combines the subtle umami of dashi with tender seaweed and silky tofu, creating a light yet satisfying bowl that works perfectly as an appetizer or a healthy side dish.

A close-up of warm Wakame Soup with tender seaweed, silky tofu cubes, and fresh green scallions in a savory dashi broth.  Pin this
A close-up of warm Wakame Soup with tender seaweed, silky tofu cubes, and fresh green scallions in a savory dashi broth. | platesignal.com

Whether you are looking for a gentle start to a multi-course meal or a quick, healthy snack, this soup delivers authentic Japanese flavor with simple, wholesome ingredients.

Ingredients

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

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

Zusatztipps für die Zubereitung

For the best texture, use a ladle and a small mixing bowl to dissolve the miso paste completely before adding it to the saucepan; this prevents clumps. Be careful never to boil the soup once the miso is added, as high heat can alter the flavor and diminish the nutritional benefits of the fermented paste.

Varianten und Anpassungen

To make a strictly vegan version, ensure you use dashi made from kombu and dried shiitake mushrooms. For added variety and nutrition, feel free to simmer sliced mushrooms, carrots, or fresh spinach along with the tofu.

Serviervorschläge

Serve this Wakame Soup alongside a bowl of steamed white rice or a fresh sushi platter for a complete, balanced meal. It also acts as a wonderful palate cleanser between courses of a larger Japanese dinner.

Steaming bowl of homemade Japanese Wakame Soup garnished with sliced scallions, served as a light appetizer or side dish.  Pin this
Steaming bowl of homemade Japanese Wakame Soup garnished with sliced scallions, served as a light appetizer or side dish. | platesignal.com

Simple, elegant, and incredibly soothing, this Wakame Soup is a testament to the beauty of Japanese culinary traditions. Enjoy it warm for the ultimate comforting experience.

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Recipe Questions

What does wakame soup taste like?

Wakame soup has a delicate, slightly briny flavor from the seaweed balanced by the savory depth of dashi and miso. The texture combines tender seaweed with soft tofu, creating a light yet satisfying bowl. The miso adds subtle sweetness and earthy umami notes.

Is wakame soup healthy?

Yes, this soup is highly nutritious. Wakame is rich in iodine, calcium, and vitamins, while tofu provides plant-based protein. The dashi broth adds minerals without heavy calories. At only 65 calories per serving, it's a light, nutrient-dense option suitable for vegetarian and gluten-free diets.

How do I prepare dried wakame?

Soak dried wakame in cold water for 5 minutes until it expands and becomes tender. The seaweed will rehydrate to about 5-7 times its dry volume. Drain well before adding to the soup. Avoid over-soaking, as the texture can become overly soft.

Can I make this vegan?

Absolutely. Use kombu and shiitake mushroom dashi instead of fish-based dashi stock. Ensure your miso paste is made without bonito flakes. The remaining ingredients including wakame, tofu, and seasonings are naturally plant-based.

Why shouldn't I boil miso?

Boiling miso paste destroys its beneficial probiotics and enzymes, which are sensitive to high heat. Always dissolve miso in a separate bowl with some hot broth before stirring it into the soup off the heat. This preserves both the nutritional benefits and the delicate fermented flavor.

What can I add to wakame soup?

Enhance the soup with sliced mushrooms, diced carrots, or fresh spinach for extra vegetables. Add cooked udon noodles or rice for a heartier meal. A drizzle of chili oil adds warmth, while extra sesame oil boosts nutty richness.

Japanese wakame seaweed soup

Light and nourishing Japanese seaweed broth with tender wakame and tofu in delicate dashi stock.

Prep time
10 min
Cook time
10 min
Total duration
20 min
Created by Carson Hughes


Skill level Easy

Cuisine Japanese

Yields 4 Portions

Dietary notes Vegetarian, Dairy free, Gluten free

What You Need

Seaweed and Broth

01 1/4 oz dried wakame seaweed
02 4 cups vegetarian dashi stock

Vegetables and Tofu

01 3.5 oz silken or firm tofu, cubed
02 2 scallions, thinly sliced

Seasoning

01 2 tablespoons white miso paste
02 1 teaspoon gluten-free soy sauce
03 1 teaspoon sesame oil, optional

How to Make It

Step 01

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

Step 02

Prepare the Dashi Broth: 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 simmering broth. Simmer for 2 to 3 minutes.

Step 04

Incorporate Miso Paste: 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 Heat: Add soy sauce and sesame oil if desired. Stir gently and heat for 1 additional minute without boiling.

Step 06

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

What You'll Need

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

Allergy details

Please review each ingredient for possible allergens. Check with a health specialist if uncertain.
  • Contains soy from tofu, miso paste, and soy sauce
  • May contain gluten in miso and soy sauce unless certified gluten-free varieties are used
  • Sesame oil may trigger allergic reactions in sensitive individuals

Nutrition info (per serving)

These nutrition stats are for general info and not a substitute for professional advice.
  • Calories: 65
  • Total fat: 2 g
  • Carbohydrates: 7 g
  • Proteins: 5 g