麹菌のチカラで変わるお米の魅力|発酵の美学

The power of koji mold changes the appeal of rice | The aesthetics of fermentation

Rice and miso soup are served on the dinner table every day. Did you know that the deliciousness of these dishes is due to the work of invisible microorganisms?

For example, fermented foods such as amazake and miso have their flavor base created by a fermentation fungus unique to Japan called koji mold.

In fact, when koji mold comes into contact with rice, it produces the umami flavor that is essential to our diet. In this article, we will provide a simple explanation of the relationship between rice and fermentation, and the mechanism behind the umami flavor that koji mold brings out .

If you are busy every day and want to reconsider your family's health and diet, I hope this will give you some hints.


The natural process of fermentation breathes new life into rice

Rice is the staple food of the Japanese people. It supports our lives in many forms, including freshly cooked rice, amazake (sweet sake), miso, mirin, and more.

The natural power of fermentation brings out the best in rice.
Fermentation is a process in which microorganisms break down and change the components of food, enhancing its flavor, aroma, and shelf life .

Among them, koji mold lives in starchy rice and uses enzymes to promote the saccharification (sweetening) of rice. For example, the natural sweetness of amazake comes from this saccharification, not sugar.

Moreover, this fermentation process is a natural method that does not rely on heat or additives . It uses the power of nature to create a gentle and delicious finish. This is the appeal of Japanese fermentation culture.

What is the true nature of the "umami" flavor produced by koji mold?

The main job of koji mold is to break down the starch and protein contained in rice using enzymes, converting them into sugars and amino acids.
These "amino acids" include the components that give rise to umami , such as glutamic acid and aspartic acid .

Glutamate in particular is a typical umami component found in kelp stock and tomatoes, and the moment it enters your mouth, you will feel a mellow, rich flavor.

The fragrant aroma of miso soup and the deep flavor of fermented seasonings are all the result of koji mold working behind the scenes .

And this "umami" is not just about taste. It has the power to make your daily meals a little more fulfilling, even with a mild seasoning.

Incorporate the delicious flavor of fermentation into your busy days

"I want to do something healthy, but I'm too busy and don't have the time."
The appeal of fermented foods is that they are easy to incorporate into your diet at times like these.

For example, additive-free amazake can be stored at room temperature and enjoyed chilled as is, or added to yogurt. Its natural sweetness and soft umami flavor will add a pleasant sensation to your morning cup.

In addition, seasonings and sweets made with koji are perfect as gifts that people "wouldn't buy for themselves, but would be happy to receive."
The great thing about fermented foods is that they make thoughtful, health-conscious gifts .

If you are looking for a thoughtful gift that shows the recipient that you have carefully considered your choice, you should know about the power of rice and koji mold.


By understanding the relationship between rice and fermentation, you may find amazake and miso to be even more "special."
Why not give a gift filled with such kindness to someone special, or to yourself?

▶︎Recommended fermented gifts here

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