
Browned Fermented Butter has to be full of buttery goodness, right?!
If you’re looking for Tokyo food souvenirs to bring home to friends and family when traveling out of Japan or to another part of Japan, one great option is the Sugar Butter Sandwich Tree. With a milky sweet white chocolate filling between crispy cookies, this is a delicious treat that just about everyone loves.
Our Japanese-language reporter Yui Imai, who often works out of Taipei, is a big fan of Sugar Butter Sandwich Trees and often buys them for herself when she’s in Japan, but she recently learned some very exciting news: Haneda Airport souvenir shops sell a special, Haneda-only flavor!
They’re “Browned Fermented Butter” flavor, and they’re so popular that over 700,000 units sold in just three months. Apparently, the cookie dough is made with plentiful amounts of fermented butter from France, and the filling contains 1.3 times more chocolate than usual. Yui couldn’t help but be intrigued, so on her next pass through Haneda Airport, she decided to check the limited flavor out.
Apparently, you can find them in Tokusen Yougashikan, a souvenir shop in Terminal 1, and Tokyo Shokuhinkan in Terminal 2, which is where Yui found hers. They come in packs of four, eight, and 12, as well as in variety packs with other popular sweets. Yui bought a pack of eight for 1,296 yen (US$8.56). Apparently they stay fresh for up to three months after purchasing, so you can buy a lot and they’ll keep just fine (in case you want to stock up before your next flight).
The box is decorated with the kanji characters for Haneda Airport as well as an airplane, so there’s no mistaking that this is an airport souvenir.
Inside, eight sandwich cookies in fancy-looking golden packages were neatly lined up in the box’s bottom tray.
It looked really nice!
Yui couldn’t wait to open one up.
The cookies had a beautiful browning to them that made them look utterly delicious. The white chocolate filling inside also looked decadent.
With a snap, Yui cracked it cleanly in half. Mannn…Her mouth watered at the sight.
▼ “Itadakimasu!”
The moment it touched her tongue, a soft, buttery flavor overtook her senses. The fermented butter was so aromatic! And the milky sweetness of the chocolate only served to level it up. It was such a decadent flavor that Yui couldn’t get enough. This might be her favorite kind of Sugar Butter Sandwich Tree yet.
If someone wanted to gift these to her, she would be utterly delighted. Not only are they buttery and delicious, but they also have a sense of specialness to them, since you can only get them at Haneda Airport. If no one does buy them for her, Yui would be all too happy to buy them for herself each time she passes through Haneda Airport, and while she’s there, she’ll be sure to pick up some Sugar Butter Sandwich Tree KitKats as well!
Images © SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]







New Japanese KitKat flavour, Sugar Butter Tree, is like cracking a chocolate tree branch
Haneda Airport’s must-buy Japanese sweet is hard to find but worth it
Nine treats you can only get (and should get!) at Tokyo’s Haneda Airport
Exclusive piping hot baumkuchen at Haneda Airport is the delicious treat all travelers must try
Japanese vending machine at Haneda Airport serves up cute cotton candy for tourists
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Pokémon comes to McDonald’s Japan for new Happy Meals toys, brings every generation’s starters
Akita Kanto Festival, one of Japan’s most spectacular summer festivals, gets an anime twist this year
Aichi city throws year-long 20th birthday bash for giant beckoning cat statue, Hello Kitty invited
Final Fantasy plushie shoulder bags are fuzzy and functional [Photos]
Toyota Museum’s international retro vehicle parade returns to Aichi this autumn
7-Eleven Japan rethinks convenience store sandwiches with a wild new choc-mint variety
U.S. government reportedly planning to close Nagoya consulate
Air-conditioned dress shirts arrive in Japan to save working professionals from sweltering heat
Yoshinoya gets into fancy fish, but is the cheap beef king reaching too far? [Taste test]
Tokyo’s newest viral dessert is like a Japanese parfait inside a bread bun [Taste test]
Japanese vending machine sells freshly squeezed lemon juice with a futuristic light show
Starbucks Japan releases first-ever gacha capsule toys, featuring iconic menu items as plush coffee charms
7-Eleven Japan adds new chocolate fruit gummies to its sweets range, but are they worth the hype?
7-Eleven Japan now offering baked-in-store pizza by the slice with two very different topping sets
Starbucks Japan opens new store inside historic seaside quarantine station near Tokyo
Studio Ghibli’s No Face twirls to sound of Spirited Away’s theme song in beautiful accessory box
Live-action Princess Mononoke is coming to streaming as a live event, previews look amazing [Video]
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japan now has human refrigerators inspired by Japanese vending machines
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
Uniqlo looks back to the very start of Pokémon with new black-and-white pixel art T-shirts[Pics]
Japanese Shinkansen becomes an overnight hotel for three nights this summer
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
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
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Pokémon Tokyo Banana’s latest offering is adorable Pikachu and Eevee chocolate cookie sandwiches
Eevee returns to Japan’s famous Tokyo Banana, bundled with a cute tote bag
What kind of magic happens when you put Japanese combini pastries into a hot sandwich maker?
What is a Butter Manju? We try one from this mega popular Tokyo dessert shop
The airport that’s practically a theme park — Shop, eat, play at the New Chitose Airport!
Comparing the new made-in-China Oreos to the made-in-Japan ones we knew and loved【Taste test】
Japanese cake becomes a hit with foreign tourists, but is it worth the hype?
Japanese cafe serves up fruit sandwiches like nowhere else
New spreadable French Toast from Japan is a game-changer