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Authentic Japanese Miso Soup with Silky Tofu and Wakame

A traditional Japanese miso soup recipe featuring delicate dashi broth, silky tofu cubes, and nutrient-rich wakame seaweed. Perfect as a comforting starter or light meal.

Janelle

By Janelle

Updated: March 18, 2026

Why I Love This Recipe

Miso soup is the heart and soul of Japanese cuisine, served at nearly every traditional meal from breakfast to dinner. This umami-rich soup combines the deep, savory flavors of fermented soybean paste (miso) with a delicate dashi stock, creating a perfectly balanced broth that's both nourishing and comforting. The beauty of miso soup lies in its simplicity and versatility. While the basic recipe calls for just a few ingredients – dashi, miso paste, tofu, and wakame seaweed – each component plays a crucial role in creating the soup's signature taste and texture. The silky tofu provides gentle protein, while the wakame adds a subtle oceanic flavor and satisfying chewiness that perfectly complements the smooth broth.

  • •Incredibly nutritious – packed with probiotics from miso, complete protein from tofu, and minerals from wakame seaweed
  • •Quick and easy – ready in just 15 minutes with minimal prep work required
  • •Authentic Japanese flavor – delivers the true taste of traditional miso soup using readily available ingredients in Singapore
  • •Naturally vegan – completely plant-based when made with kombu dashi instead of bonito flakes
  • •Perfect comfort food – warm, soothing, and satisfying without being heavy or overly filling

Ingredients You'll Need

Here's what you'll need – nothing too fancy, just good ingredients that work together beautifully.

  • 1 piece (10cm) kombu kelp (for dashi stock)
  • 15 g bonito flakes (katsuobushi) (optional, omit for vegan version)
  • 800 ml water
  • 3 tbsp white miso paste (shiro miso preferred)
  • 200 g silken tofu (cut into 1cm cubes)
  • 2 tbsp dried wakame seaweed
  • 2 stalks spring onions (thinly sliced)

Step-by-Step Instructions

  1. 1

    Prepare the wakame by soaking it in cold water for 5-10 minutes until it expands and becomes tender. Drain well and set aside. Cut the silken tofu into 1cm cubes, handling gently to prevent breaking.

    ~5 min

    Tip: Wakame will expand to about 5 times its original size
  2. 2

    Make the dashi stock by placing kombu in a pot with 800ml cold water. Let it soak for 30 minutes if you have time, or proceed directly to heating. Heat the water slowly over medium heat until it just begins to simmer.

    ~8 min

    Tip: Don't let the kombu boil vigorously as it will make the dashi bitter
  3. 3

    Remove the kombu just before the water reaches a full boil. If using bonito flakes, add them now and let the water come to a gentle boil for 30 seconds, then turn off heat and let steep for 2 minutes.

    ~3 min

    Tip: Save the used kombu for making vegetable stock later
  4. 4

    Strain the dashi through a fine mesh strainer to remove the bonito flakes, pressing gently to extract liquid. Return the clear dashi to the pot and keep it at a gentle simmer over low heat.

    ~2 min

    Tip: Don't press too hard on bonito flakes or the dashi will become cloudy
  5. 5

    In a small bowl, take about 3 tablespoons of the warm dashi and whisk it with the miso paste until completely smooth with no lumps. This tempering prevents the miso from clumping when added to the hot soup.

    ~2 min

    Tip: Use a small whisk or fork to ensure no miso lumps remain
  6. 6

    Add the rehydrated wakame to the simmering dashi and cook for 1-2 minutes. The seaweed should be tender but still have a slight bite to it.

    ~2 min

    Tip: Don't overcook wakame as it becomes slimy
  7. 7

    Gently add the tofu cubes to the pot, being careful not to stir too vigorously to prevent breaking. Let them heat through for about 1-2 minutes until warmed but not boiling.

    ~2 min

    Tip: Use a wooden spoon to gently move tofu around
  8. 8

    Remove the pot from heat and slowly stir in the miso mixture. Mix gently but thoroughly to distribute the miso evenly throughout the soup. Taste and adjust miso if needed.

    ~1 min

    Tip: Never boil miso soup after adding miso paste as it kills beneficial probiotics
  9. 9

    Ladle the soup into individual bowls and garnish with thinly sliced spring onions. Serve immediately while hot for the best flavor and texture.

    ~1 min

    Tip: Warm the soup bowls beforehand to keep the soup hot longer

How Do I Know It's Ready?

The soup is ready when the tofu is warmed through and the miso is fully dissolved with no visible lumps. The broth should be hot but not boiling, with a creamy beige color throughout. Wakame should be tender but still retain some texture, not mushy or slimy.

Frequently Asked Questions

Yes, you can make a simpler version using just hot water and miso paste, though it won't have the complex umami depth of traditional miso soup. For better flavor without making dashi from scratch, use instant dashi powder or even vegetable stock as a base. The key is having some form of flavorful broth to balance the salty, fermented taste of the miso paste.

Final Thoughts

I hope you enjoy making this Authentic Japanese Miso Soup with Silky Tofu and Wakame as much as I do! It's a wonderful dish that's sure to become a favorite in your kitchen. If you try this recipe, I'd love to hear how it turned out – feel free to share your experience and any variations you tried!