Feb 15 - 17 2021


10:00 am - 11:30 am



2102 Online Shoyu Making Class

Shoyu (Soy sauce) is the most essential Japanese condiment which define the flavors specific to Japanese cuisine. These days thankfully Japanese shoyu is available almost anywhere in the world.  However in older days, Japanese people would hide a small bottle of shoyu in their suitcase whenever travelling around the world and secretively use it on meals when they started to crave flavors of home (which they always do).

Unlike miso, it is not well known that you can make shoyu at home fairly easily from simple ingredients. And like miso, home-made shoyu is always special and tasty.

In this workshop, you will learn the process of making your own shoyu at home. All the necessary ingredients will be provided before the class via post (apart from koji starter). Koji starter can be purchased from our website.

Although the process is rather straightforward, it requires time. Growing shoyu koji takes three days. And then fermenting shoyu moromi takes 10-12 months! You need to press and pasteurise it to produce shoyu in the form you are familiar with.  So, it definitely requires patience and effort. But if you don’t mind that, your own tasty shoyu full of live microbes will be waiting at the end of the journey.

The class uses the social learning platforms, such as Facebook (private group) and Zoom. If this is a problem, please contact me in advance before booking the class.

In this class, I will also mention how to make alternative option such as gluten-free or flavoured shoyu.



15th – 17th February   

     15th February (Mon)   10am-11.30am Shoyu koji making in Zoom

     16th February (Tue)     The growth of shoyu koji is shared via Facebook

     17th February (Wed)    10am-11.30 am Moromi making in Zoom

NB:You are requested to prepare steamed or cooked soybeans before the class. All instructions will be given



£90 (Lockdown price, £10 discount from Regular price £100)



Previous experience of koji making would be beneficial

Access to Zoom function

Access to Facebook (Please contact me know if you have any problems using Facebook)



  • Food mixer/grinder
  • Thermometer with probe or Bluetooth
  • Warming equipment (Eg Oven with hot water bottle)
  • Water spray
  • Cooking pan/Pressure cooker/Steamer
  • 2L container
  • Mixing bowl
  • Sieve
  • Frying pan
  • Scale (0.1g accuracy)
  • Fan (optional)
  • Dough cutter
  • Thick cotton cloth (>50cm sq)
  • Tray with rack
Sold out!

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Koji Making - Online

The online koji making class takes place over the span of 10 days. The class structure is as follows.

Day 1       Guidance session (Zoom 1 hour):

What is koji?   Koji making overview Tools & equipment required

Day 7-9 Practical (Zoom & Facebook Live):

Day 7  Steam Inoculation Zoom 4 hours) Day 8  Mixing (Facebook Live) Day 9  Drying(Facebook Live)

Day 10     Wrap up (Zoom 1.5 hour)

        Review, Troubleshooting, QA         Koji application

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