What is Koji Starter for Shoyu【MC-01】40g (for 360 Litres of Shoyu) - Marufuku Koji Starter, Product from Nihon Jyozo Kogyo Co., Ltd.

Established since 1917, Nihon Jyozo Kogyo Co., Ltd. was established by Dr. Meijirou Togano, who was an engineer at the Japan National Research Institute of Brewing.

As the research on shoyu (Japanese soy sauce) brewing had progressed, there had been an increasing demand for suitable koji starter for shoyu.

To meet the demands of more companies, Marufuku Koji Starter for Miso has been researched and developed over the years.

This is our company's representative product of koji starter, our representative Aspergillus oryzae.

We use the culture strain which has fast generation of fermentation heat, good hyphae coverage on grains, and less clumps.

It also has balanced enzyme titer. This koji starter is very easy to use.

This product contains 40g of koji starter (Aspergillus) that can be stored for a long time, in conveniently sachet package so you can open it just as much as you need.

This is a very suitable koji starter/koji seed for those who want to make koji at home.

40g of this koji starter can be used for making about 360 liters of shoyu.

What is Koji Starter/Koji Seed?

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What is Koji?

Health Benefits of Koji

Major Nutrients of Koji

• ■ Vitamin B1 : Helps produce energy | Fatigue recovery | Suppress irritation/stress feeling | Amnesia prevention | Helps breaking down carbohydrates.

• ■ Vitamin B2 : Helps the metabolism of skin | Helps breaking don lipids | Accelerate growth speed | Sebum control | Prevent oral ulcer/stomatitis.

• ■ Vitamin B6 : Reduce premenstrual syndrome (PMS) | Improve immunity | Prevent arteriosclerosis | Helps breaking down proteins and lipids | Prevent oral ulcer/stomatitis | Suppress the excitation of nerve cells.

• ■ Vitamin H (Biotin) : Suppressing the cause of atopic dermatitis | Prevent diabetes | Alleviate epilation and gray hairs.

• ■ Pantothenic acid : Stress resistant | Helps breaking down lipids | Detoxification from chemical compound | Increase good cholesterol | Maintaining the health of skin | Increase immunity.

• ■ Essential amino acids : Among the 20 types of amino acids making up proteins, nine kinds of them can not be synthesized in the body. If there are any lacks of them, muscle, blood, bone cannot be made.
  These nutrients can be consumed in supplements, but when ingested from koji based food, the absorption rate in body is over 90%.

The Amount of The Koji Rice That Can be Made and the Amount of Rice and Koji Starter Used

Portion of rice

Portion of koji starter

Amount of finished koji (estimated)

The Amount of Miso That Can Be Made and the Amount of Ingredients Used

Finished Miso	2.5 kg	5 kg	7.5 kg	10 kg	12.5 kg	15 kg	17.5 kg	20 kg	22.5 kg	25 kg
Rice Koji	1 kg	2 kg	3 kg	4 kg	5 kg	6 kg	7 kg	8 kg	9 kg	10 kg
Soybeans	500 gr	1 kg	1.5 kg	2 kg	2.5 kg	3 kg	3.5 kg	4 kg	4.5 kg	5 kg
Salt	300 gr	600 gr	900 gr	1.2 kg	1.5 kg	1.8 kg	2.1 kg	2.4 kg	2.7 kg	3 kg

Finished Miso	2.5 kg	5 kg	7.5 kg	10 kg	12.5 kg
Rice Koji	1 kg	2 kg	3 kg	4 kg	5 kg
Soybeans	500 gr	1 kg	1.5 kg	2 kg	2.5 kg
Salt	300 gr	600 gr	900 gr	1.2 kg	1.5 kg

The Benefits of Handmade Koji Rice

• ■　You know exactly what ingredients are being used. Formerly, in the Japanese family, miso, shouyu, amazake etc. were homemaded with koji. However, the eating habits change with the time, and miso, shouyu, amazake changed from "things to make" to "things to buy." Under such circumstances, there are many people who are uneasy because they don't know what type of rice is used, in foods such as miso and shio koji (salt koji) available at supermarkets etc. If it's handmade, you can make it with pesticide-free rice prepared by yourself so it's safe.

• ■　Handmade is fun! When Kawashimaya's staffs tried to make handmade koji rice, they're impressed that their hands became so smooth. It's a famous story that because they engage in sake-making, the hands of chief brewer at sake (Japanese liquor) brewery is beautiful. In koji rice's nutrients, there are a lot of components that make the skin beautiful. Then, if you make koji rice by yourself, you will take care of it like your own child. Thus, the miso and amazake you made will become more delicious.

• ■　It's more economical. When making miso, you will need koji in kilograms. If you buy it, it will be really pricey. For that, if you make your own koji using koji starter (Apergillus oryzae), it will be much more economical because you can even make koji rice from 15kg of rice.

Koji-making Professionals' Favorite Tools!
Koji-making's Best Friends

Tetoron Cloth

Strong against high temperature, excellent in steaming.

Rice won't stick to the cloth, a very handy steaming cloth.
It's also useful for moisture control during the warming of koji.

Seiro (Bamboo Steamer)

Steamed rice is the key to make koji.

Using bamboo steamer/seiro, steam the rice with high heat for about 40 minutes.
It's also a useful tool for daily dishes.

Tips for Making Steamed Rice from the Professionals

Bamboo steamer is recommended to steam the rice!
Also, tetoron steaming cloth is highly recommended!
Don't forget to steam the rice with high heat.

When steam/vapor comes out from the surface of rice and the surfaces become transparent, cover the steamer basket.

Steam it for about 40 minutes (recommended) after you put on the lid.
When steaming in bamboo steamer that has two or more rows, change the order of rows in midway of steaming process.

Need More Info About The Koji Starter's Enzymatic Contents?

We have compiled more informations about our koji starters. Please click the button below for details.

Product's Details

Name	Koji Starter for Shoyu【MC-01】- Marufuku Koji Starter
Netto	40 grams (for 360 litres of shoyu)
Storage Method	Please put it in dry, cold, dark place with temperature lower than 15ºC.
Expired Date	From manufacture date: ・In cold dark place (such as in a shelf, refrigerator): about 6 months ・In freezer: about 1 year

Important Points