Can this Koji be used to make Miso?

Yes you can, the Koji-Kin(fungus) you can grow it on the the grains after steaming them in a tub. I use a tub with waterbottles filled with hot tap waters. the temp needs to be around 80-86 degrees to grow for 30 hrs. make sure to gently move the rice around every 10 hrs to get it to grow evenly across the rice. I used plain medium white grains. before you steam the rice be sure to wash the rice in a plastic tub until the water is clear.Miso (みそ or 味噌 ?) is a traditional Japanese seasoning produced by fermenting soybeans with salt and koji (the fungus Aspergillus oryzae) and sometimes rice, barley, or other ingredients.

Can the Koji sit at room temperature for a few days without spoiling?

If you mean after the Koji mold has been incubated on the rice, then I would suggest refrigerating it once it's reached the desired maturity. At room temperature, it will likely continue into full maturation (turning green) and begin sporing. Many people will spore a small portion of their koji'd rice in order to have their own spores for future batches.

Can this be used to make barley koji? I want to make my own koji to then make miso. Thanks!

Yes. These are Aspergillus oryzae spores. You can grow them on whatever grain, legume, or other appropriate substrate that you choose.

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Sake Kit

Product ID: 1668504

Details

Body Description
Medium
Brand
Home Brew Ohio
Flavor
unflavored
Number of Items
1
Unit Count
1.0 Count

🍶22L premium sake yield

📦compact envelope packaging

⚗️14-18% alcohol range

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4250 som

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Body Description
Medium
Brand
Home Brew Ohio
Flavor
unflavored

Description

🍶 Unlock the art of sake brewing—your exclusive ticket to homecrafted sophistication!

BREW LIKE A PRO - Includes koji mold spores to craft authentic sake at home
VERSATILE BREWING - Ideal for sake or rice vinegar enthusiasts seeking quality control
GENEROUS BATCH SIZE - Produces up to 22 liters (5.8 gallons) of rich sake per kit
COMPACT CONVENIENT - Neatly packaged in an envelope for easy storage and quick start
OPTIMAL ALCOHOL CONTENT - Achieve a perfect 14-18% ABV for that smooth, refined finish

This Sake Kit from Home Brew Ohio contains koji mold spores essential for brewing up to 22 liters of sake with an alcohol content between 14-18%. Packaged compactly in an envelope, it requires additional ingredients like medium grain rice, wine yeast, and citric acid. Perfect for homebrewers aiming to create authentic, high-quality sake or rice vinegar with clear, easy-to-follow instructions.

Specifications

ASIN	B0064OGDYS
Body Description	Medium
Brand	Home Brew Ohio
Brand Name	Home Brew Ohio
Customer Reviews	4.6 out of 5 stars 237 Reviews
Flavor	unflavored
Included Components	Sake Kit
Item Type Name	Kit
Manufacturer	Midwest Homebrewing and Winemaking Supplies
Model Number	G9-TPGG-DH5D
Number of Items	1
Part Number	G9-TPGG-DH5D
Unit Count	1.0 Count

Reviews

Z**L

12.03.2026

J**E

13.05.2023

N**K

1.05.2025

A**B

29.05.2020

K**H

29.03.2019

C**L

17.03.2017

J**G

13.04.2022

M**R

23.02.2015

J**A

22.10.2020

B**L

12.10.2018

A**R

29.10.2023

M**.

11.04.2022

G**H

13.07.2019

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