
All this awaits you on a short train ride from Tokyo.
With more and more overseas travellers seeking out day trips to the Japanese countryside while visiting big cities, it’s becoming harder to find hidden hot springs that aren’t crowded with tourists. Over in Tokyo’s neighbouring Saitama Prefecture, though, there’s an onsen that’s still under the radar for most tourists, but with everything it has to offer, it won’t remain a secret for long.
Called Ofuro Cafe Hakuju no Yu, this onsen facility boasts one of the highest concentrations of hot spring water in the Kanto region. As suggested by the name, the focus is on two things — the hot spring itself and the attached cafe, where you can nourish yourself with fermented foods after nourishing your skin with the healing waters.
▼ The highlight of the cafe is the “soy sauce bar” where you can try 99 types of soy sauce.
Restaurant Tawaraya is the name of the cafe, and it’s where you can enjoy meals containing koji, a beneficial mould that’s added to steamed grains such as rice, barley, and soybeans. All diners have free access to the artisanal soy sauce bar, and the reason why 99 types are offered is because it ties in with the name of the hot spring — Hakuju no yu. In Japan, “hakuju” is the word used to mean “99 years of age“, due to the fact that if you subtract one from one hundred you get 99, and if you subtract the kanji for one (“一”) that appears at the top of the kanji for 100 (“百’), you get “白”, which is read as “haku”. “Ju” is used to mean both “congratulations” and “longevity”, and if you want to delve into the wordplay even further, the word “yu” can mean both “hot water” and “oil”, with “shoyu” being the Japanese word for soy sauce.
The hot spring on site looks a bit like soy sauce too, although the shade is due to naturally occurring minerals in the water, which gushes out from the paleozoic layer 750 metres (0.5 miles) underground.
The entire facility underwent renovations in June, with a number of new areas added, including a chill-out space where you can read to your heart’s content inside tubs resembling huge soy sauce fermentation barrels.
Plus, the store sells small 100-millilitre (3.4-ounce) bottles of all the soy sauces from the bar in the cafe so they won’t take up a lot of room in your suitcase if you want to take them home as souvenirs.
If you love soy sauce as much as you love hot springs, this is definitely a site to put on your itinerary. And you can always continue your love for the fermented sauce by slathering your hands with this new soy sauce hand cream!
Site information
Ofuro Cafe Hakuju no Yu / おふろcafé 白寿の湯
Address: Saitama-ken, Kodama-gun, Kamikawa-cho, Watase 337-1
埼玉県児玉郡神川町渡瀬337-1
Open: 10:00 a.m.-11:00 p.m. (last entry 10:30 p.m.)
Website
Source, images: Press release
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!




Secret onsen hot spring is a hidden gem in Tokyo
Lost at the nengajo lottery this year? Get a second chance by winning your way to onsen instead
Onsen Ramen – Why go to the hot spring when the hot spring can come to you?
Hidden onsen hot spring near Tokyo is waiting to be discovered by foreign tourists
Love hot springs and tattoos? You won’t want to miss this onsen paradise near Tokyo!
Starbucks Japan opens new cafe and art gallery in top Tokyo tourist neighbourhood
15 years after Tohoku tsunami, Japan’s free disaster phone message number is important to remember
Is Daiso’s microwave Japanese rolled omelet maker worth your time and money? [Taste test]
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Japan’s Human Washing Machine pods are now on sale for home use, and they’re not cheap
Is Japan’s Crab-shaped Cup Ramen Timer worth the hype?
There’s a samurai-era village for you to walk through at this awesome overlooked museum in Japan
So long, Satomobile! We repaint our car with magic markers for Japan’s cheapest paint job【Video】
Please don’t make the stupid mistake of taking an “abandoned” bike for a ride in Japan
The 6 best frozen foods at a Japanese grocery store
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Japanese government planning higher ticket prices for foreign tourists at Tokyo National Museum
Starbucks Japan releases a new Cream Puff Frappuccino for a limited time
Silicone testicle covers banned from Japanese sauna following cups being left behind and on shelves
Studio Ghibli now sells Ursula’s backpack from Kiki’s Delivery Service at its anime shop in Japan
One Piece creator has hidden secret of anime treasure’s identity in chest at bottom of real-world ocean
Is Tokyo Station’s startlingly expensive wagyu bento boxed lunch worth its high price?[Taste test]
Japan’s newest Shinkansen has no seats…or passengers [Video]
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Foreign tourists in Japan will get free Shinkansen tickets to promote regional tourism
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
2018 Top 20 Day Trip Onsen Hot Spring and Spa Ranking in Japan
Soy sauce candy being handed out in Gunma to combat heat stroke
Hot Spring Lovers Rejoice! Three Unique Onsen Resorts to Try Before You Die
Secret hot spring onsen in Japan is a hidden gem waiting to be discovered by tourists
Hot springs website reveals the most popular user-picked onsen in all of northern Japan
Hyotan Onsen – Japan’s only hot spring with three Michelin stars
Meat Festival at Yunessun hot spring resort features creamy soy milk bath!
Japan’s top five retro hot springs for a time trip back to the onsen past, as chosen by travelers
We go looking for the free kaoyu hot spring facebath of onsen town Kusatsu【Photos】
The top five best multiple-hot-spring hotels in all of Japan
Famous hot springs of Beppu now offering portable inflatable onsen with authentic Beppu water
Ibaraki Prefecture promotes onsen hot springs with muscly man bathing in 4K【Videos】
Five amazing snow-view open-air Japanese hot springs in Hokkaido [Photos]
The 10 best hotel hot springs in Japan, as chosen by Japanese travelers
Massive hot spring theme park coming to Osaka Bay Hotel, a dream come true for onsen lovers
Onsen in Japan uses the same mysterious hot spring bathing system from Ghibli film Spirited Away