What is Dried Rice Koji (Marukura) The dried rice koji (Aspergillus oryzae or rice malt) Marukura is a rice koji made by the craftsmen from Okayama Prefecture.The craftsmen finish...

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What is Dried Rice Koji (Marukura)

The dried rice koji (Aspergillus oryzae or rice malt) Marukura is a rice koji made by the craftsmen from Okayama Prefecture.

The craftsmen finish this rice koji carefully and slowly with warm air so the koji fungus will not break.

Due to its popularity, we have prepared a large capacity of 25kg Dried Rice Koji (Marukura). You can use this for business.※ After receiving your order, the product will be ordered from the manufacturer. * There are times when production is stopped by the manufacturer or there is a delay in shipping. In that case we will contact you separately. Please note.

Dried Rice Koji (Marukura)

You can use rice koji for making sweet sake (amazake), handmade miso (traditional Japanese seasoning made from fermented soya beans and barley or rice koji), shio koji (Japanese natural seasoning made by salt, water and rice koji) etc. You can also use it as a substitute materials when making yeast food such as bread and sweets.


We pack in carefully it a box so it could fit 25kg.



Costumer's Review

We received a lot of review from costumers who previously purchase this product!


I made shio koji with rice and koji.

The handmade shio koji becomes more mellow as the days passed, and it is delicious!

I enjoy using this product for making various things.


I've completely run out of dried rice koji!

I've completely run out of dried rice koji, so I will buy a lot of amount for this product!


This koji is slightly sweet.

I boiled the 150g of cooked rice and 900ml of water to the pot and put in the koji when the temperature reaches 60-degree Celcius.

After I transferred it to the rice cooker and keeping the lid open for 10 hours in a warming mode, everyone can make a sweet sake without fail!


It's tasty!

It doesn't taste too strong. It's tasty.


The miso made from this dried rice koji has a thick texture.

It's very tasty. I have made it countless times.


I was worried about the expired date because I use it overseas.

But the expired date at the package is exactly six months.

I made a delicious sweet sake so I recommend this rpoduct!


I am eating brown rice for daily consume.

But after all, it is nice to have a delicious sweet sake made with white rice koji and white rice.


I'm very thankful that the product packing was done nicely, and there also a good explanation of the product.

If the koji dishes making goes well, I would like to use this product again.


How to Use Dried Rice Koji (Marukura)

You can use it to make sweet sake, homemade miso, and shio koji easily at home. The dishes will be more delicious if you use the high-quality koji made by old-fashioned way!

Dried Rice Koji (Marukura)


recipe email For those who ordered this product for the first time,
you will receive an informational recipe email for shio koji, sweet sake, and miso.



Homemade shio koji can be made by mixing dried koji, salt, and water and then fermenting it.


乾燥麹 味噌

If you mix soybean and salt in dried koji and fermented it for a long time, you can finish the handmade miso. In the good's bag, it is stated to use it after returning it to raw koji. But you can use it as dried koji when you are making the homemade miso.



Mix dried koji and hot water of about 55-60 degree Celcius in a rice cooker or other heat incubator. Keep it warm for about 6 hours, you can make a delicious sweet sake only with rice koji!


The Difference Between Dried Koji and Raw Koji


Koji is divided into two types: dried koji and raw koji.

Dried koji is a koji that has been dried by clearing the moisture inside.
In the other side, raw koji is weak to bacteria, which has a possibility to easily decreasing it's quality by doing self fermentation. Therefore, it's become the raw koji's disadvantage that the preservation if difficult. To solve this disadvantage, here comes the dried koji.

Unlike raw koji, dried koji has resistance to bacteria. So the self-fermentation could be suppressed. The dried koji is just dried to prevent the self-fermentation. Also, there almost no difference from the taste of dried koji comparing to raw koji.


Message from Food Manufacturer


The Marukura Food Manufacturer do the production and sells koji, sweet sake, and miso at Kurashiki City, Okayama Prefecture. In addition to domestic sales, we are exporting food (such as brown rice sweet sake, white miso, wheat miso, natto miso, etc) to North America, European Union, Australia, and Southeast Asia. Because of that, we strive to deal not only with domestic hygiene standards but also overseas hygiene standards.

In November 2017, we passed the examination from FDA (United State's Food and Drug Administration) which is said to be one of the most difficult examinations. Because of that, we can do our exports well.

There are indeed lots of companies with a long history that can not be imitated outside Japan. We take advantage of know-how to cultivated to produces food that can be eaten deliciously, safely and securely. That is the restoration of a brand Made in Japan.


The Important Point of Dried Rice Koji (Marukura)

  • -The package contains 25kg of Dried Rice Koji (Marukura)
  • -Expired date: half year from production.
  • -When saving dried koji, please avoid places with high temperature, high humidity, and direct sunlight that could change the dried koji's taste and quality. Please save it in a cool place such as the refrigerator and use sealed containers so the dried koji won't absorb any moisture.

Product Details

Name Okayama's 100% Dried Rice Koji (Marukura)
Contents 25kg
Expired Date Half year from production
Preservation Method Please save in a low humidity refrigerator.
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