Rice koji is alive.
By witnessing the moment it is born and nurtured, you’ll experience the fascinating wonder of fermentation firsthand.

This hands-on class lets you experience the full three-day rice koji–making process—from steaming the rice to producing finished koji—under the guidance of seasoned professionals. You’ll even work inside a traditional koji room, a space that is rarely accessible to the general public.

You will take home one tray of freshly made koji (approx. 750g).

For detailed information about the three-day program and schedule, please contact the store directly.
(Aogen Main Store: 028-633-3335  10:00 AM - 5:00 PM)

Reservations must be made no later than 5 days before the class date.
For inquiries made 4 days or fewer before the class, please contact the store directly.

For safety reasons, we kindly ask that young children do not accompany participants.

Venue Information:

Aogen Main Store 2F Studio
1-4-32 Asahi-cho, Utsunomiya City
Phone: 028-633-3335

Parking Information:

Those arriving by car may use the dedicated parking lot on the premises.
As spaces are limited, please use nearby parking lots if full.

What to Bring:

Apron, headscarf, hand towel, writing utensils

Aogen Fermentation Class Cancellation Policy

◉ Due to ingredient preparation, cancellation fees apply starting 5 days prior to the class date.

       5 days prior to 3 days prior: 30%

       2 days prior to 1 day prior: 80%

       Same day or no-show: 100%

Cancellations made 6 days prior or earlier will receive a full automatic refund of the class fee.
Cancellations cannot be processed online starting 5 days prior. Please contact the store (Aogen Main Store) by phone or email.
Aogen Main Store: 028-633-3335 (10:00 AM - 5:00 PM)
Email Address: yoyaku@aogen.co.jp (24-hour reception)

We appreciate your understanding.