Japanese onsen offers 99 types of soy sauce for visitors.
Ofuro Cafe Hakuju no Yu in Saitama offers a unique onsen experience with a soy sauce bar and fermented food options.

You’ve gotta check out Ofuro Cafe Hakuju no Yu—a hidden gem just a train ride from Tokyo! While everyone’s chasing crowded hot springs, this spot in Saitama Prefecture is still a secret. It has one of the highest concentrations of hot spring water in Kanto, and it pairs that healing soak with a cafe serving up delicious fermented foods. It’s like taking care of your skin and your taste buds all at once!
The highlight? A “soy sauce bar” with 99 types of soy sauce! Named after the hot spring, the wordplay goes deep. Each sauce ties to Japanese traditions and numerology. Plus, after a soak, you can unwind in new chill-out spaces that feel like giant soy sauce barrels. They even sell small bottles of soy sauce to take home. If you’re into hot springs and soy sauce, this is the spot to add to your itinerary!
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