¥47,400
¥33,180
Wholesale Koji Tray This product is the wholesale bulk item containing 6pc of Koji Tray (Morobuta/Kojibuta) Size M. If you want to purchase the single item version, you can go...

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Wholesale Koji Tray

This product is the wholesale bulk item containing 6pc of Koji Tray (Morobuta/Kojibuta) Size M. If you want to purchase the single item version, you can go to the product page by clicking here.

What is Koji Tray (Morobuta/Kojibuta) Size M?

Koji tray medium size is a professional-style container that is ideal for making koji at home. Called kojibuta or morobuta in Japanese, the koji tray is the proper tool to make koji.

This product itself is limited in the market. Crafted with local natural Japanese cedarwood, this product is constructed by hand, one part after another by skillful craftsmen.

Koji Lid Tray Size M

Uses “Nagara Cedar” from Gifu Prefecture

Nagara cedar refers to cedars produced in the Nagara River basin in Gujo District and Takegi District of Gifu Prefecture. The name means “long and good cedar”. Cedar is suitable for koji because it has no natural antibacterial effect like cypress.

Nagara Cedar for Koji Tray

One koji tray Can Make Up to 2.5kg of Rice Koji

With this M-size koji tray, you can make up to 2.5kg of koji rice. If you use the household koji fermenter, you can make koji using three lids at once, so you'll be able to produce 7.5kg of koji rice.

Up to 2.5kg of Rice Koji in Koji Tray

No Preservatives Used

No preservatives are applied to general building materials. You can use it safely.

Koji Tray with No Preservative Used
Board Thickness

Koji Tray Size M Details

Jiuqu lid M size
  • 1. 30cm
  • 2. 27cm
  • 3. 5,5 cm
  • 4. 40cm
  • 5. 31cm
  • 6.7 cm

Koji Tray Size Variations

How to Take Care of Koji Tray

● Koji tray is made of wood, therefore do not store in humid places for it can cause mold to grow.

● If you find mold growing on your koji tray, try wiping it off with rubbing alcohol or shochu with high level of alcohol.

● If the mold is already growing too deep, scrape it off.



Koji Tray Variations with Suitable Design


Tips: After each use, hand-wash with water and then wipe thoroughly with clean cloth. Let dry in a well-ventilated room. Do not use detergent and dishwasher for cleaning.

Role of the Koji Tray

Koji tray, commonly known as kojibuta, is a small container that has been used for a long time in koji making (the process of propagating yeast cells on steamed rice).

Koji tray is the suitable tools to make rice koji, brown rice koji, soybean koji, barley koji, etc.

Koji making takes place in a hot and humid specialized room called Kojimuro, which takes 48 to 56 hours. However, due to the nature of the room, various parts like the center and corners, front and back, whether it's close to the ceiling or near the tatami floor, can have different temperatures and humidity.

Therefore, the rice is divided into small portions on this koji tray. The lid placement is regularly moved to adjust the rice condition to be the same in terms of temperature and humidity.

By moving and reloading every 3 hours, lids stacked in the room's corners are moved to the center. The lids in the back are moved to the front, and lids stacked in the upper row are moved to the lower row. By doing this, the yeast cell will be uniformly propagated in the rice koji.

Advantages of koji tray method:
● Compared to machine-made koji (manufactured by automatically controlling the heat generation of koji), the finish of koji is much better. Even in sake breweries, when it comes to sake in junmai or ginjo classification, most of the breweries are made using this lid method. After all, there are some aspects of brewing that are not yet understood by the power of science or machinery.

● The koji finish affects not only sake but also miso and soy sauce. The koji, which is of good quality even after the preparation, works well.

Disadvantages of koji tray method:
● Controlling the temperature. Because temperature control is difficult, it takes more energy and attention.

● A large number of koji tray requires more labor.

Notes

● This product is made with natural material, therefore the wood grain and color may be different in each koji tray.

● Wood grain may very greatly from item to item. Customers is asked to refrain from selecting products. We appreciate your understanding.

Possible Shipping Fee Changes for Oversize Product

In case of buying an oversize wholesale set product with other items (or buying this set more than one), the shipping price might exceed what was written on the website. Sometimes, we will ship it in two boxes to avoid the dimension limit, which causes an extra shipping fee. We will contact you via email if there are changes in the shipping fee. Feel free to contact us if you have any questions.

Product Details
Size 40cm x 31cm x Height 7cm
Material Cedar Wood
Product Weight In Total 3.9kg
*Delivery with EMS and surface mail has a maximum limit of 30kg. If your total order exceeds 30kg, we recommend separate shipments.
Koji Tray M

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