Join Koji Klub

and build flavors you can't find anywhere else.

Create without limits

freshly made koji at your door, every single month.

Why do makers join Koji Klub?

No risk

If an experiment goes sideways, just send us a picture - you'll get advice on how to better ferment next time and free replacement koji. So you can create more freely!

Savings

Ferment more, save more! Get an immediate 20% off - any koji, any size - with your Koji Klub subscription.

Flexibility

Choose a weekly, monthly, or bimonthly delivery. Skip deliveries based on need, and cancel anytime for any reason.

How can I join?

After selecting the type, size, and how much koji you would like every month, click the "Join the Koji Klub" option before adding to your cart and checking out.

Choose My Koji