
Famous chocolate bar gets fried up for Valentine’s Day, but it’s not exactly as great as they say.
If you’re looking to try a Japanese chocolate with a cult following in Japan, you can’t go past Yuraku Confectionery’s Black Thunder. Priced at 40 yen (US$0.26), this tiny, palm-sized chocolate can be found at shops around Japan, and it consistently ranks as one of the top sellers at Japanese convenience stores. Its immense popularity has spawned regional varieties, merchandise and even themed hotel rooms, and as the go-to chocolate for Valentine’s Day, it’s now in the spotlight again, with a brand new collaboration that’s got everyone talking.
On board for the collaboration is Hanamaru Udon, a Japanese noodle chain that’s just as famous for its tempura sides as it is for its Sanuki udon (a firm type of noodle that hails from Kagawa Prefecture). Now for a limited time, Hanamaru will be adding a new option to its fried sides for Valentine’s Day: Black Thunder Tempura.
▼ Hanamaru Udon
Hanamaru is confident that this new offering will be a treat for the taste buds, saying:
“Black Thunder Tempura sees Black Thunder being made into tempura, highlighting the chocolate’s sweetness and bittersweetness, and allowing you to enjoy its crunchy texture.
It’s surprisingly compatibile with Sanuki udon. Not only can you enjoy it as a dessert after eating udon, but it can also be taken out, so it’s a great Valentine’s Day gift.”
If you’re of the mindset that gifting a fried chocolate bar to your loved one isn’t the most romantic thing in the world, you could try and snag one of the chocolate bars being released to mark the collaboration, which Hanamaru is giving away free to the first 20 customers who order the Black Thunder Tempura at each participating outlet.
▼ Simply show the official Hanamaru udon app to staff and they’ll present you with a chocolate, subject to availability.
While Black Thunder is synonymous with Valentine’s Day for a lot of people, diehard fans like us are happy to have it any day of the week. So when we heard that the new Black Thunder Tempura was being released on 6 February, we hotfooted it down to Hanamaru’s Akasaka Hitotsugi-dori location, which is the only branch in Tokyo that sells it.
▼ There are only 30 available each day at 10 participating Hanamaru branches, so we were lucky to get our hands on it.
▼ At first glance, you might mistake this fried chocolate bar for a piece of fried chicken.
However, after taking it out of the bag and placing it on a plate, we could make out the Black Thunder silhouette, shrouded in Hanamaru’s crispy tempura batter.
Taking a bite, our taste buds were met with the sweet, familiar flavour of our beloved chocolate bar, with its characteristic cookie pieces providing a fantastic crunch that contrasted beautifully with the finer crispiness of the batter. The highlight, though, was the centre, which had melted into a fantastic gooey mess of chocolate that spread bittersweet flavours throughout the palate, leaving us salivating for more.
It was a textural sensation, and when we added it to a bowl of the chain’s Sanuki udon, we were able to appreciate the textures even further.
However, despite the chain saying the Black Thunder Tempura was a good partner for Sanuki udon, we had to disagree. The flavours did not meld well at all, and it was so bad we thought the chain was playing an April Fools’ Day prank on us.
▼ Japanese-style dashi soup and chocolate do not together.
So if you’re going to try the Black Thunder Tempura, we suggest you eat it on its own to fully enjoy the blend of crispy batter and gooey chocolate.
If the chocolates aren’t sold out, you’ll find them in the serve-yourself tempura section, in amongst the fried chicken and croquettes. At 100 yen each, they’re more expensive than the Black Thunder Tempura that debuted at a pop-up event space in Shinjuku last Valentine’s Day, but they’re even more delicious than we remembered, so we didn’t mind shelling out a bit more for them.
They’re only available for a very limited time, from 6-14 February, and only at the 10 branches listed below, so if you’d like to get a taste of them, you’ll want to get in early to avoid missing out!
● Aeon Mall Sapporo Hiraoka (Hokkaido Prefecture)
● Sendai E-beans (Miyagi)
● Akasaka Hitotsugi-dori (Tokyo)
● Tsurumi Eki-mae (Kanagawa)
● Aeon Mall Nagoya Dome-mae (Aichi)
● Senba Shinsaibashi (Osaka)
● Aeon Mall Ayagawa (Kagawa)
● Takamatsu Hyogomachi (Kagawa)
● Matsuyama Takehara (Ehime)
● Aeon Mall Nogata (Fukuoka)
Related: Hanamaru Udon location finder
Photos©SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!










Deep-fried “Let’s just be friends” chocolate tempura appears in Japan for Valentine’s Day
Tempura Black Thunder chocolate bars on sale in Shinjuku from now till Valentine’s Day
Black Thunder shocks fans by suspending giri choco obligation chocolates on Valentine’s Day
Udon chain’s awesome “Tempura Pass” deal works out to less than 10 yen per piece over five weeks
Black Thunder chocolate brings us the future of Valentine’s Day: Crabs!
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Godzilla figure based on Shin Godzilla CG model is stunningly detailed, shockingly expensive
Dove ad slams Japanese beauty ideals, backfires with complaints from public instead
Dining with Totoro — 400-year-old ceramics company makes Studio Ghibli chopstick rests【Photos】
“Office lady in heels walking on tatami”: The mysterious world of Japanese fetishism
Starbucks Japan lucky bag is the most hard-to-get fukubukuro of the New Year
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Starbucks Japan releases new zodiac chilled cup drink for 2026
“Where are the normal men?” A Japanese woman tells of five online dating woes
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Street Fighter Hadouken Churros to be launched and eaten in Tokyo, Okami pudding on offer too
Japanese woman mistaken for bear
Return of Totoro sequel short anime announced for Ghibli Park
Is this the most relaxing Starbucks in Japan?
Starbucks on a Shinkansen bullet train platform: 6 tips for using the automated store in Japan
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Japanese train company is letting fans buy its actual ticket gates for their homes
Is China’s don’t-go-to-Japan warning affecting tourist crowds in Tokyo’s Asakusa neighborhood?
Starbucks Japan unveils new Christmas goods and a rhinestone tumbler that costs 19,500 yen
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Nintendo’s Kirby now delivering orders at Kura Sushi restaurants, but not in Japan
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
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】
The top 10 annoying foreign tourist behaviors on trains, as chosen by Japanese people【Survey】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Fukuoka’s Inaba Udon chain comes to Harajuku and we slurp up every last drop of it
Express your love this Valentine’s season…with udon noodles topped with a humongous heart!
Japanese chocolate company sells Valentine’s Day school desks, tents, and more for nostalgia
Black Thunder becomes an epic chocolate dessert at Japanese cafe chain
Sushiro and Black Thunder fall in love with each other again for Valentine’s Day
Japanese confectioner has firm rebuttal to Godiva’s anti-obligation chocolate ad in Japan
Black Thunder grab event in Tokyo gets you a fistful of chocolate bars for less than 30 cents
Amazing Chocolate tools a perfect fit for Japanese Valentine’s Day
Leave a Reply