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

Iseso Miyako Koji 1kg | Desertcart Italy

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🌾 Unlock the secret to authentic Japanese flavor with every grain!

LONG LASTING POTENCY - Dry-processed for powerful fermentation that stays consistent even after long-term storage.
PURE DOMESTIC RICE BASE - Sourced entirely from premium domestic rice, ensuring superior flavor and purity.
VERSATILE CULINARY ESSENTIAL - Elevate your cooking with a foundational ingredient that enhances miso, sake, and pickling.
AUTHENTIC HANDMADE CRAFTSMANSHIP - Experience the rich tradition of artisanal koji, crafted by hand for unmatched quality.
PERFECTLY SIZED FOR YOUR KITCHEN - Compact dimensions fit seamlessly into any culinary space without clutter.

IseSo Miyako Koji 1kg is a premium, handmade koji crafted from 100% domestic rice. Its dry processing method ensures long-lasting fermentation power, making it an essential ingredient for miso, sweet wine, and pickling. Compactly sized for easy kitchen storage, this 1 kg pack delivers authentic Japanese culinary tradition straight to your home.

Specifications

ASIN	B004FHB5OO
Age Range Description	All Ages
Best Sellers Rank	#75,795 in Grocery ( See Top 100 in Grocery ) #29 in Active Dry Yeasts
Brand	Isesou
Brand Name	Isesou
Coin Variety 1	Koji Rice Powder
Container Type	Bag
Customer Reviews	4.6 out of 5 stars 2,627 Reviews
Item Form	Powder
Item Package Quantity	1
Item Package Weight	1.03 Kilograms
Item Type Name	food
Item Weight	1.02 Kilograms
Item package quantity	1
Item weight	1.02 Kilograms
Manufacturer	IseSo
Number of Items	1
Number of Pieces	1
Part Number	25080
Serving Range	More than 15 servings
Serving range	More than 15 servings
Set Name	Rice
Size	2.2 Pound (Pack of 1)
Specialty	No information
Unit Count	1000.00 Grams
Unit count	1000.00 Grams

Reviews

S**U

Very good but expensive

It's very good, but since it's imported, it's quite expensive and I can't really afford to buy it.

23.02.2026

M**A

smell

I don't know if that is normal but it smells awful.

14.03.2025

V**N

What I expected

12.07.2026

A**R

Great

Worked great for home made miso

24.08.2026

C**O

Buen producto pero precio muyyyyyy desproporcionado

Porque no lo encuentro en más sitios aquí en España pero está cariiiiiisimo, si puedes encárgaselo a alguien que vaya a Japón porque así es inasumible. El producto es buenísimo pero no merece la pena

25.03.2025

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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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