Japanese Miso Soup – Dashi, Tofu, Wakame and Spring Onion
Umami-rich dashi broth with silken tofu, rehydrated wakame and spring onion — Japan's daily comfort bowl.
About This Recipe
Miso soup is the backbone of Japanese daily eating — a bowl of warm, umami-rich broth that begins almost every meal in Japan, from a simple breakfast to a formal kaiseki dinner. It is made from dashi (a delicate broth of kombu seaweed and dried bonito flakes) into which miso paste is stirred — never boiled — to preserve its living cultures, complex fermented flavour, and nutritional properties. The soup then receives simple, delicate additions: silken tofu cubes, rehydrated wakame seaweed, and thinly sliced spring onion. The quality of miso soup is determined by the quality of the dashi. Homemade dashi — made by steeping kombu and bonito in hot water — is infinitely more complex than instant granules, though instant dashi (dashi no moto) produces a decent result on weekday mornings. The type of miso matters too: white miso (shiro miso) is mild and sweet; red miso (aka miso) is salty and deeply fermented; mixed (awase) miso is the balanced everyday choice. Miso soup is best made fresh and served immediately — the tofu is delicate and the miso flavour at its brightest right after stirring in. It comes together in five minutes and is one of the most nourishing, satisfying quick meals in any cuisine.
Ingredients
Serves 2
- 600 mldashi stock(homemade or instant)
- 2 tbspwhite or mixed miso paste
- 150 gsilken tofu(cut into 1cm cubes)
- 5 gdried wakame seaweed(rehydrated in cold water)
- 2spring onions(thinly sliced)
Instructions
- 1
Heat the dashi
Bring dashi to just below a simmer — small bubbles forming at the bottom. Do not boil.
Boiling dashi dulls its delicate flavour. Low heat is essential.
- 2
Dissolve the miso
Place miso paste in a small ladle or bowl. Add a spoonful of hot dashi to it and stir until smooth. Add to the pot, stirring gently.
Never boil miso — it destroys the living cultures and dulls the flavour significantly.
- 3
Add toppings
Add tofu cubes and drained wakame. Heat gently for 1 minute — just enough to warm through.
- 4
Serve immediately
Ladle into bowls. Top with spring onion. Serve right away.
Pro Tips
- →
Never boil miso — add it off the heat or on very low heat.
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The type of miso dramatically changes the flavour. Start with shiro (white) miso for a mild result.
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Adjust miso to taste — the saltiness of miso pastes varies significantly between brands.
Variations
- •
Tonjiru: hearty pork and root vegetable miso soup with red miso.
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Clam miso soup (hamaguri): clams add an extra dimension of sweetness to the dashi.
Storage
Miso soup is best made fresh. If storing, add miso when reheating rather than cooking it in the soup.
History & Origin
Miso soup has been consumed in Japan for over a thousand years, with miso paste itself arriving from China around the 7th century AD. During the Kamakura period (1185–1333), miso soup became a staple of the samurai warrior diet and later spread to all levels of Japanese society. Today, surveys suggest that over 70% of Japanese people eat miso soup daily. It is considered the quintessential Japanese comfort food.
Frequently Asked Questions
What is dashi, and can I substitute it?
Dashi is a Japanese stock made from kombu (kelp) and katsuobushi (dried bonito flakes). It is the foundation of Japanese cooking and provides the umami backbone of miso soup. Instant dashi powder (dashi no moto) is a convenient and decent substitute. For a vegan version, use kombu dashi only (steep kombu in cold water for 30 minutes — no bonito). Chicken stock is not a traditional substitute but works in a pinch.
Nutrition Facts
Per serving (150g) · 2 servings total
Time Summary
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