
We head to an udon restaurant where they do things very differently.
Usually, the quickest way to differentiate udon from other types of Japanese noodles is visually. Udon noodles tend to be round, thick, and white, making them look different from ramen (thinner and yellow) or soba (grayish brown or green and flat).
▼ A bowl of udon
So when we heard about a restaurant where the udon is not only flat, but pitch-black too, we knew where we were going for lunch: the town of Kiryu, in Gunma Prefecture.
Stepping off the Tobu Kiryu Line at Shin-kiryu Station, we still had a bit of a ways to go to get to Tanumaya, the restaurant serving black udon. Luckily for us there are free-to-use rental bikes right outside the station, so we hopped on one and started pedaling.
It was still before noon, and the town was quiet and peaceful as we rode down the street, admiring the views of the nearby mountains and river.
On foot, it’s about a 30-minute walk from the station to the restaurant, but taking the bike meant we arrived a little before its 11:30 a.m. opening time.
Inside, the interior has a charmingly rustic feel, and while it’s not a particularly big restaurant, the tables and counter seats are laid out in a way that keeps the cozy atmosphere from feeling cramped.
There’s a menu, but we didn’t have to read it to know what we wanted: the Kuro-obi, or “Black Belt” udon, for 950 yen (US$6.75). Our server told us we had our choice of hot or cold broth, and since there was still plenty of lingering summer heat and humidity in the air, we opted for cold.
As we waited for our food, the restaurant started to fill up with other customers, who seemed to be locals and regular diners at Tanumaya. Each and every one of them asked for “curry udon,” making us feel like maybe we were going to be missing out on the real star of the menu, but honestly, there was no way we were going to skip the Black Belt on our first visit.
After a few minutes, our server returned with our food, and, well…
…there’s absolutely no way you can accuse the Black Belt’s name from being misleading!
The noodles get their striking color from edible bamboo charcoal that’s kneaded into the dough (like with the black hamburgers that sometimes pop up in Japan). Making the visuals even more striking is that the broth is soy milk-based, providing not only an intense contrast but also adding a shimmering, glistening effect as you raise the noodles.
Speaking of picking up a mouthful of noodles with your chopsticks, the Black Belt udon is incredibly long. Ordinarily, you’re supposed to slurp Japanese noodles, but the combination of length and width here actually makes it a little easier to fold the noodles around your chopsticks a few times before taking a bite.
Because of how captivating they look, it wasn’t until a few moments had passed that we realized…
…the Black Belt udon comes with a side of curry!
Considering how all the regulars were ordering curry udon, this was a major relief. Tanumaya describes it as a “roasted spice keema curry,” and we’d been provided with an iced side dish so we could enjoy it hot or cold.
The curry combined beautifully with the rich, ever so slightly sweet soy milk broth, with the spicy notes coming on strong but coming to a mild finish as we chewed. The noodles are pleasantly firm, and if you’ve never eaten bamboo charcoal before, don’t worry, as there isn’t even a hint of earthy bitterness to the taste or aroma of the Black Belt udon.
If the color is still too much for you, Tanumaya serves regular-looking white udon too, but for us, in terms of looks, flavor, and fillingness, we came away completely satisfied, though also craving some black ice cream from Ikea Japan for dessert.
Restaurant information
Tanumaya / 田沼屋
Address: Gunma-ken, Kiryu-shi, Higashi 6-7-11
Open 1130 a.m.-2 p.m., 5 p.m.-7 p.m.
Closed Mondays
Website
Photos ©SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]
















Japanese restaurant serves noodles that you fold and eat【Taste test】
Popcorn shrimp udon, as in noodles with popcorn and shrimp, now on the menu in Tokyo【Taste test】
Shake Udon one-hand takeout bukkake noodle cups look to shake udon eating in Japan【Taste test】
Taste-testing Tokyo’s 100-times spicy, and sweatiest, udon noodles【Photos, video】
White Curry Udon: A new take on noodles discovered at a Japanese airport
Tokyo’s life-size Gundam anime mecha statue will be removed this summer
Ichiraku Ramen-inspired ramen sets from Naruto anime pay homage to Naruto, Sasuke, and Sakura
161-year-old Kyoto confectionary maker releases new edible Pokémon lineup
7-Eleven Japan is releasing Greedy chocolate chip and whipped cream sandwiches
Studio Ghibli’s president is leaving the company. Will it change how they make anime?
Hundreds of rose bushes in bloom at Tokyo’s off-the-beaten-path, next-to-the-tracks flower street
7-Eleven Japan now has ramen machines…but only at 41 stores
Let’s hike a Japanese mountain (that isn’t Mt. Fuji) – Mt. Tsukuba[Photos]
Starbucks Japan adds a new Frappuccino and Milk to the menu, but are they worth the calories?
Saltiest ramen in Japan? Ikebukuro White goes viral for crazy salt levels
Starbucks Japan releases two new “chunky” drinks… and matching gel designs for our nails
Japan now has gyoza doughnuts, and they taste like no other doughnut we’ve tried before
Mt. Fuji hot spring inn gets even more beautiful after dark with Firefly Festival
Japan releases new ramen sandwiches… that don’t taste like ramen
Don’t miss the Tokyo Tower City Light Fantasia ~Summer Landscape 2026~ event during your travels
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Move aside, convenience store egg sando – there’s a better version of the iconic sandwich in Japan
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
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
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
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Black Thunder Tempura from Japanese udon chain is not a good partner for noodles
Limited-edition Carbonara Udon will anger noodle purists and pasta lovers 【Taste test】
All-Noodle Artisan Marugame udon restaurant operating in Tokyo, only 30 percent pass test
Pitch-black instant ramen added to Cup Noodle lineup to fill dark hole in our ramen-loving hearts
Be brave! Japan’s pitch-black “ghost ramen” tastes better than it looks
Kyoto Station’s hidden-in-plain-sight curry should be the last thing you eat before leaving town
Udonuts: Doughnuts containing udon noodles become a thing in Japan
Turn around, and you’ll see this Tokyo convenience store is also something else【Taste test】
Cold curry noodles? Is Japan’s favorite curry rice restaurant’s idea crazy enough to work?
Frigid Silver Bukkake Udon is Japan’s latest way to beat the summer heat
50-year-old instant noodle recipe is back from the past in Japan for a limited time[Taste test]
We taste test the new Squid Ink Black Cup Noodle!
Watching a one-star certified master udon craftsman at work…at a famous Japanese noodle chain
Udon Museums set to bring oodles of noodles to Tokyo and Osaka this year
Noodles Go Gourmet: We Sample “Udon Sashimi” in Tokyo