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10 Day Miso

A miso made from soya beans that ferments in just 10 days
Prep Time15 minutes
Cook Time1 hour 30 minutes
Fermentation Time10 days
Total Time1 hour 45 minutes
Course: Ingredient
Cuisine: Japanese
Keyword: Koji, soya beans
Servings: 100 10g servings
Calories: 200kcal

Ingredients

Instructions

  • Place the beans in a bowl and add 1 litre of water. Cover and leave to soak in the fridge overnight.
    Soya beans soaking in water
  • Drain the beans and transfer them to a large pan. Cover with water and bring to the boil; then reduce the temperature, add a lid, and simmer until the beans are soft. NOTE: This takes about 45 minutes for fava beans, but may take several hours for soya beans. 
  • When the beans are cooked, pour them into a colander and drain. 
  • If you'd like a smooth miso, blend the beans with a hand-held blender or food processor.
    If you prefer a chunky miso, roughly mash the beans with a fork.
  • Once the beans have reached a consistency you're happy with, leave to cool.
  • Mix in the packet of koji and 60g of salt.
  • Form the miso into small balls. If the balls crack they are too dry, so will need a little bit more water mixed in. 
  • Squash the balls into a clean jar, ensuring all pockets of air are removed. 
  • Once all the miso has been squashed into the jar, sprinkle the surface with the remaining 2g salt. Then cover and transfer to a warm place (25-30'C) for 10 days.
    Soya bean miso
  • After 10 days, gently scrape the salt from the surface and taste the miso. If it is the required strength, transfer to a fridge and enjoy! It will keep in a fridge for several months. If you prefer the miso a bit stronger (or the temperature has been lower than 25'C) then replace the salt topping and leave for another few days.

Notes

Non-iodised salt, is a salt that does not contain additives which may inhibit fermentation