How long will this keep? Will freezing it help it longer?

I wouldn't freeze it because I wouldn't have it around that long.

After opening the package, can we keep it in the room temperature?

Mine has been open but I put it into a large Ziploc. It's fine at room temp as long as it's dry and not exposed to moisture.

Would this be considered white or yellow koiji?

Miyako Kouji is produced using both white and yellow kouji.

How do I make more koji using this?

Koji original form is rice (shown in the bag) if you want to make more then grind into powder to achieve the flour base if your wanting to use it for drenching foods before cooking or to age your beef over a day or two. I don’t know if this answers your question

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IseSo Miyako Koji 1kg

Product ID: 24065522

Details

Brand
Isesou
Item Package Quantity
1
Item Weight
1.02 kg
Number of Items
1
Unit Count
35.27 Ounce

🌾100% domestic rice

⚖️1kg premium weight

🕰️long-term stable storage

€ 40.07

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Description

🌾 Elevate your culinary game with heritage-rich Miyako Koji!

GENEROUS 1 KG SUPPLY - Perfectly sized for both professional kitchens and passionate home chefs.
PURE DOMESTIC RICE BASE - Sourced exclusively from premium domestic rice, ensuring unmatched flavor purity.
ROBUST LONG TERM STABILITY - Dry-processed for powerful preservation, keeping your stock fresh and potent over time.
AUTHENTIC HANDMADE CRAFTSMANSHIP - Experience artisanal quality with every batch, crafted for true connoisseurs.
TOP RANKED WINEMAKING INGREDIENT - Trusted by experts, ranked #22 in winemaking essentials for superior results.

IseSo Miyako Koji 1kg is a premium, handmade koji rice product crafted from 100% domestic rice. Designed for long-term storage without quality loss, it serves as a top-tier ingredient in winemaking and seasoning, delivering authentic flavor and artisanal excellence in a generous 1kg package.

Specifications

ASIN	B004FHB5OO
Best Sellers Rank	#22,005 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #18 in Winemaking Ingredients
Brand	Isesou
Brand Name	Isesou
Coin Variety 1	Rice
Container Type	Bag
Cuisine	Japanese
Customer Reviews	4.7 out of 5 stars 2,681 Reviews
Item Form	Powder
Item Package Quantity	1
Item Package Weight	1.03 kg
Item Type Name	food
Item Weight	1.02 kg
Manufacturer	Iseso Co., Ltd.
Number of Items	1
Number of Pieces	1
Package Size Name	1kg
Part Number	25080
Product Shelf Life	300 days
Set Name	Rice
Shelf Life	300 days
Size	35.27 Ounce (Pack of 1)
Specialty	Vegan
Unit Count	35.27 Ounce

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 40.07

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ireland.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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