[Shipping within Japan]

・Order seed koji: Free shipping

(Up to 6 bags will be shipped by Kuroneko Yu-Packet, and 7 or more bags will be shipped by Yamato Transport Takkyubin.)

・Orise series: 800 yen nationwide ※Free shipping for 8 bottles or more (Yamato Transport frozen delivery)

・Dried Koji: 800 yen nationwide (Yamato Transport refrigerated delivery)

・Fresh koji: 800 yen nationwide (Yamato Transport, frozen delivery)

*Please note that refrigerated and frozen products cannot be shipped together, so shipping fees will apply for each item.

[Shipping to overseas destinations]

It depends on your order and country.

We will ship internationally via DHL. Shipping costs will be automatically calculated on the cart screen, so please check it.

*For orders under 2,000 yen, we charge a handling fee of 500 yen as document preparation fee.

For domestic shipping in Japan,

Up to 6 bags of seed koji: Kuroneko Yu-Packet (Delivery time cannot be specified, delivery takes 3 days to 1 week from shipping)

7 or more bags of seed koji, dried koji: Yamato Transport delivery service

orise: Yamato Transport refrigerated delivery

Raw Koji: Yamato Transport frozen delivery

Delivery is by.

*Please note that refrigerated and frozen products cannot be shipped together, so they will be shipped separately.

*If you place an order on a Saturday, Sunday or public holiday, it will be shipped on the next business day (weekday).
Please order with plenty of time to spare.

We will ship overseas via DHL or EMS. *Only koji starter can be shipped overseas.

If you require a receipt, please write a request for a receipt in the comments section on the cart screen along with the recipient's name and any notes.

To request a receipt after placing an order, please contact us using the inquiry form or by email directly to info@kojiyasanzaemon.jp and let us know the following information: [Name of person placing the order], [Order number], [Recipient's name], and [Notes].

As a general rule, we cannot accept cancellations due to customer convenience.

Contains no alcohol.

It is safe for drivers, children, and pregnant women to consume.

When you make koji at home, a certain amount of bacteria will be mixed in. Using that as starter koji to make more koji will lead to culturing bacteria, so you should never do this.

Kojiya Sanzaemon's starter koji is manufactured after thorough quality inspections, so you can use it with confidence. However, if the tools and hands used are not clean, bacteria will grow. Please thoroughly sterilize your tools and hands with about 70% alcohol before making koji.

No genetically modified ingredients are used.

When making koji, be sure to use steamed rice.

If you sprinkle koji seeds on cooked rice, the rice will contain too much moisture and the koji will not form. It can also lead to spoilage.

Koji forms into a sheet when the hyphae of the koji mold grow and intertwine, forming a clump and sheet. The hyphae are cut by loosening the rice while the koji mold is growing, so depending on the number of times and timing of the growth, the hyphae may not fully grow and may not form a sheet. If the product does not form into a sheet, it does not mean it has failed. If there is nothing abnormal in the appearance or smell, it is ready to use.

Spread the finished koji thinly and allow it to cool to room temperature. Once it has cooled to room temperature, place it in a clean bag or container and store it in the freezer. When defrosting, allow it to thaw naturally.

Brown rice has a hard skin, so it does not absorb water easily and koji mold does not grow easily.

We recommend polishing the rice for 2-3 minutes before making koji, rather than using brown rice as is.

Tane koji(koji spores) can be shipped overseas. However, we do not currently ship other products overseas.

It depends on the quantity of products and country. Please confirm the cart screen.

If you order less than 2000JPY, it costs 500JPY for document preparation fee.

We exclude countries with which we have not done business in the past because we need to confirm them. Please contact us before purchasing.

We use DHL and Japan post. Depending on situations, we might not be able to ship by desired shipping methods. In that case, we'll contact by email.

Please contact us before purchasing. We will be happy to consult with you individually.

Please avoid high temperature and high humidity, and store at room temperature. After opening the package, use it up as soon as possible.

Yes, it is possible. Please contact us by email or chat first.