Reservation required
Please call with your preferred
date, time, and number of guests.
FERMENTATION EXPERIENCE IN OTARU
Surrender to the warmth
of fermentation.
Discover Ohtaka Enzyme through experience.
A journey into fermentation, beginning with the warmth of sawdust.
Reservation required Reception 10:00–17:00 Closed on Wednesdays and Thursdays
Adults ¥1,800
Includes bathwear and towels.
View prices10:00–17:00
Closed Wednesday and Thursday
HoursOtaru, Hokkaido
1-22-24 Sakura, Otaru
AccessFEEL THE FERMENTATION
From drinking fermentation
to being wrapped in it.
Otaru Ion House is a dry-bathing facility where conifer sawdust mixed with Ohtaka Enzyme extract is warmed naturally by microbial fermentation. The experience includes a fermented botanical drink before bathing and skincare afterward.
THREE WAYS TO EXPERIENCE
Taste. Be enveloped.
Feel it on your skin.
One visit, three ways to experience Ohtaka Enzyme fermentation.
Begin with a fermented botanical drink.
Begin your visit with Super Ohtaka, a fermented botanical drink made from plant extracts.
Be enveloped in warmth.
Rest in sawdust fermented with Ohtaka Enzyme concentrate. Feel the warmth produced by microorganisms around your body.
Feel it on your skin.
After bathing, you can try skincare made with fermented ingredients, including a facial lotion. Discover fermentation through a drink, a warm bath, and skincare.
THE BATH
Warmth created without direct heating—
the warmth of fermentation.
Your body is covered in naturally warmed sawdust. Staff assist every first-time guest.
About 10–15 min Typical bathing timeAbout 1 hour From arrival to departureNothing special to bring Bathwear and towels includedReservation required Personal guidance from our staff
First Visit
OHTAKA ENZYME CONCENTRATE
What is Ohtaka Enzyme concentrate?
Bringing the gifts of plants together
through fermentation.
Ohtaka Enzyme concentrate is made by fermenting and maturing extracts from vegetables, fruits, wild plants, and other botanical ingredients through the work of microorganisms.
Here, the concentrate is added to sawdust for bathing with fermentation heat. Your encounter with it extends from tasting a drink to being enveloped in warmth.
The time lived by plants, carried into a drop.
Explore the philosophy behind the concentrate.
From the forest,
the story of sawdust.
From forest to bath, then to the fields.
Follow the journey of sawdust.
OHTAKA ENZYME
A century of fermentation.
Ohtaka Enzyme’s long-developed philosophy and fermentation expertise are at the heart of Otaru Ion House.
1926Created a fermented botanical drink
1961Opened the first Ion House
1972Supported the Sapporo Winter Olympics