Japanese-style Miso Cod Soup with Sweet Potato, Porcini & Edamame

Serving size

High protein 1/3 daily fibre 4 of 5 a day New Low sat fat Nutrient dense

Japanese-style Miso Cod Soup with Sweet Potato, Porcini & Edamame

Prep time: 15 mins
Total time: 35 mins
Cuisine: Japanese
Food group: Fish

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Cooking Instructions

The protein cooking time listed in this recipe has been updated.

As of December 2025, we've revised cooking times for all our proteins to reflect improved food safety guidance.

Check out the latest recommended times in our Cooking Guidelines.

Before you start

  • Boil a half-full kettle
  • Pull out a large lidded frying pan, a measuring jug, a grater & a peeler

Get started

  • Peel and dice the sweet potato into 2cm chunks. Thinly slice the chestnut mushrooms. Thinly slice the spring onion, keeping the white and green parts separate. Peel and grate the ginger and garlic
  • Add the porcini and stock powder to the measuring jug with 350ml boiling water (175ml for 1 person). Set aside to infuse

Build the base

  • Heat the large frying pan with 1 tbsp olive oil on medium-high heat. Once hot, add the sweet potato and chestnut mushrooms and cook for 4-5 mins, until golden. Season with salt and pepper
  • Add 1 tsp olive oil, the spring onion whites, ginger and garlic and cook for 1 min, until fragrant
  • Stir in the porcini stock mix and miso paste and bring to a boil, then lay the cod evenly in the pan. Cover with a lid and simmer for 16 mins

Add the greens

  • Halve the mangetout widthways. Quarter the lime
  • After 16 mins, add the mangetout and edamame to the soup and simmer for a further 4 mins, until the fish is cooked through and the sweet potato is soft. Add a splash of water if it's too dry

Final touches & plate up

  • Check your fish is cooked through; it should be steaming hot, opaque and separate easily with a fork
  • Squeeze the juice of 2 lime wedges into the soup, taste and season if needed
  • Share the cod soup between bowls. Scatter with the spring onion greens. Garnish with the remaining lime wedges to finish

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