Miso Shiru

Japan's fundamental daily soup: cloudy, deeply savoury miso paste dissolved in dashi, with silken tofu and wakame seaweed, eaten at every meal from breakfast to supper

Origin: Japan

From the journey of Soy.

Miso shiru (味噌汁, 'miso liquid') is the most widely eaten dish in Japan and possibly in the world: it is estimated that more than 70 per cent of Japanese people eat miso soup at least once daily, and the ritual of preparing a fresh pot of miso soup each morning is as fundamental to Japanese domestic life as the daily cup of tea is to British culture. The combination of dashi (stock made from kombu seaweed and dried bonito flakes) and miso paste produces a broth of extraordinary savoury complexity: the kombu's glutamates, the bonito's inosinate, and the miso's own fermented amino acids create a triple-stack umami that is nutritionally complete and flavourally satisfying in a way no other quick-made broth achieves. Miso paste itself is the product of fermenting cooked soybeans with salt and kōji (the mould Aspergillus oryzae grown on rice or barley), aged for periods ranging from a few weeks to several years. The resulting paste ranges from pale ivory and mildly sweet (shiro miso, white miso, aged two to eight weeks, typical of Kyoto) through yellow-beige and balanced (awase miso, blended miso) to deep brown-red and intensely savoury (aka miso, red miso, aged one to three years, typical of Nagoya and the Chūbu region). Each regional style of miso produces a distinctly different soup, and Japanese cooks choose their miso as carefully as a wine-maker selects grapes. The dashi-miso combination is documented from at least the Muromachi period (1336–1573 CE), when Buddhist temple cooking systematised the use of kombu and dried fish as stock bases. The pairing of miso with dashi, rather than plain water, is the technical refinement that transforms miso soup from a simple fermented-paste broth into a vehicle of extraordinary subtlety. This recipe uses a classic awase miso (blended white and red miso) for a balanced, everyday preparation: neither too sweet nor too austere, with silken tofu and wakame as the standard additions.

Ingredients

Stock

  • 800 ml dashi stock (see notes for quick dashi method)

Miso

  • 3 tbsp white miso paste (shiro miso), or use awase (blended) miso

Additions

  • 200 g silken tofu, cut into 1.5 cm cubes
  • 8 g dried wakame seaweed

Garnish

  • 2 spring onions, finely sliced on the diagonal

Method

  1. Reconstitute the dried wakame seaweed in a small bowl of cold water for 5 minutes. Drain, gently squeeze out excess water, and roughly chop into manageable pieces if the strands are long. Set aside.
  2. Bring the dashi stock to a gentle simmer in a medium saucepan over medium heat. Do not boil: miso soup should be heated but never vigorously boiled, as boiling destroys the aromatic volatile compounds that give miso its characteristic fragrance.
  3. Add the silken tofu cubes to the warm dashi. Heat gently for 2 minutes until the tofu is warmed through. Handle the tofu carefully: silken tofu is extremely delicate and will crumble if stirred aggressively.
  4. Ladle approximately 50 ml of the warm dashi from the pot into a small bowl. Add the miso paste and whisk or stir until fully dissolved and smooth with no lumps remaining. Pour this miso liquid back into the pot.
  5. Add the rehydrated wakame to the pot. Stir gently once. Taste and adjust: if the soup seems flat, add a little more miso (dissolved in a spoonful of broth first). The soup should be distinctly savoury but not salty.
  6. Ladle into warmed bowls. Garnish with finely sliced spring onion. Serve immediately: miso soup is always freshly made and drunk whilst hot.

Notes

Quick dashi: bring 1 litre of cold water to a simmer with a 10 cm piece of kombu (dried kelp) in it. Remove the kombu just before boiling. Off the heat, add a large handful (about 15–20 g) of katsuobushi (dried bonito flakes). Steep for 3–4 minutes, then strain through a fine sieve. This produces a light, clean ichiban dashi (first stock) ideal for miso soup. Instant dashi powder (dashi no moto) is a perfectly acceptable substitute for everyday use. For a completely vegan version, use kombu dashi only (skip the bonito): the soup will be lighter in character but still excellent with white miso. The miso-to-dashi ratio is personal: this recipe is deliberately mild (suitable for daily drinking); increase to 4 tablespoons for a stronger, more robust soup.

The Gastrographer

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