Archives for posts with tag: Rye koji

The last batch of koji for this year is put out to dry.

I’ve gone through about 15 kilos barley, 10 kilos rye, and 16 kilos of rice turning it into koji. Some has already been made into miso, some has been sold, a little more will be made into miso and the rest will be saved to sell or make into miso in the fall.

The koji making season is over for this year. Now it is time to start planting seeds.

My first batch of light rye koji was dried and ready to use, so I boiled a kilo of french eco soybeans.

This time I’m using the rye koji made with Higuchi yellow barley tane koji. The next batch will be with the one from Gem Cultures.

I’m using the standard 2 year miso recipe.

At about this time last year I got the idea of trying rye for koji making. I had my grain farmer run the rye grains through the husking machine he uses for barley. It worked fine, so I made 3 batches of rye miso. The first one, a 6 month miso, was good and now long eaten up. The second, a 1 year miso is now open and it is great. It has a flavor of it’s own.

There is a 2 year miso too, to open next year.

In the mean time I must get busy and make more rye koji and rye miso.

It grew very well

I’ll make some with the other barley tane koji too – and a couple batches of 2 year rye miso.

Yesterday I was out at Stora Hällsta, the organic farm where I buy my barley and rye for koji making, as well as other farm products.

They have a full battery of milling machines, including a huller for hulling barley. When I order whole grains for koji making, I have them run through the huller i little extra, so that the koji mold grows better. That goes for the rye too, even tho it does’t need hulling.

It’s gone about 6 months since I made my first ever rye miso. One batch was a sweet miso – more rye koji, less salt and less time. I have opened it and  tasted it. 

And made a vegetable soup with it. 


Nice color and smell. It was, of course, a bit weak because of the short fermentaion time, but very tasty. It had the sweet-sour flavor of a good sweet miso, and the umame effect was great. Ot will be interesting to see and taste the development of the 1 year and 2 year miso versions. When the time comes. 

This time the beans got cooked right. And the result was perfect – so far. One jar of 6 month rye miso and the other jar of 1 year rye miso. 


I had 600 grams of rye koji which I divided into 3 parcels of 200 grams each, 1 for later use to test rye amazake and 2 for quick miso. 

I had to recalculate my standard recepes for 6 month miso and 1 year miso with 200 grams koji as the fix figure. 

6 month miso:

  • 167 gr soybeans
  • 200 gr rye koji
  • 33 gr salt

1 year miso

  • 188 soybeans
  • 200 gr rye koji
  • 45 gr salt

Both fit nicely into 1 liter jars for fermentation. Now for the final ingredient – wait. 

Now that I have some nice rye koji, I can do some experiments using it. First out is a 2 year rye miso using my standard recipe. 



2 years will be a long time to wait, so next week I will have to make some express miso, so that I can get a good taste of it sooner.

The second batch of rye koji is a great success too. 


That’s the last batch of koji for this year – 27 batches in all. Some have gone to making miso and amazake already, but there should be plenty left for more miso now and this fall, as well as for selling. And if I run out, I can always make more in december. 

Success!


Ready for drying;


I will make one more batch of rye koji then a batch or two of rye miso next week. I think I’ll try to make a batch of rye amezake too, to see what that tastes like.  

It looks good, smells good, feels good, tastes good and is growing well. 


It’s the morning of the second day and it’s already sporulating. I think it’s going to be a success.