
Fast food chocolate bread sounds like a dangerous combination.
Last year, Japanese fast food chain Mos Burger surprised us all with the announcement that they would be expanding beyond burgers and fries to bring us plain sliced bread.
Unlike other white bread on the market, this one was said to be so rich it didn’t need to be eaten with butter, and while it was delicious, it wasn’t easy to procure as it was only sold twice a month by advance reservation.
Despite these hurdles, the bread became a runaway hit, and so now, Mos Burger have teamed up with the world’s largest bread-baking corporation, Yamazaki Baking, for a brand new type of bread — chocolate bread.
▼ This one too, is available via advance reservation, for pickup at Mos Burger branches on the second and fourth Fridays of each month.
This Rich Chocolate Bread, as it’s called, only became available on 11 March, so we picked up a pack as soon as it was released. We also ordered a pack of their original white bread so we could compare the two versions side by side.
▼ The chocolate bread looked, and smelled, very chocolatey.
Sizing the two varieties up against each other, we could see that the chocolate version was slightly less thick than its white counterpart.
▼ That’s because the white bread is cut into four slices, while the chocolate is sliced into five.
Tearing the slice apart, the bread was incredibly soft and moist. So moist, in fact, that our fingertips felt damp after touching it, as if the rich and buttery oils contained inside the bread had seeped out of it.
The slice actually left an oily mark on the bamboo tray it had been sitting on, proving that it really doesn’t need any extra butter. So we followed Mos Burger’s suggestion to eat it as it is, biting down into its pillowy soft surface.
The texture was light and airy, with a satisfying chewiness, and its sweetness was subtle and delicate. This wasn’t a cheap, overly sweet chocolate bread — it was elegant and modest, toeing the line between sweet and savoury with expert finesse.
While the sweetness was restrained, it still had a bold chocolate flavour. It wasn’t overpowering, though, making it perfectly suitable for a decadent hotel-style breakfast at home.
People on Twitter have been raving about the bread, saying it’s even more tasty when warmed or toasted, so we popped it in the microwave to try it warm.
▼ It didn’t look any different, but the outside felt nice and crispy.
The crispy exterior added a fantastic contrast to the warm and soft interior, transforming it into a snack-type treat with a crunch that reminded us of a chocolate potato chip.
Both the toasted and non-toasted versions were fantastic, but in the end, we preferred the super soft texture of the non-toasted slice, which is best eaten on the day of purchase.
▼ If you really want to treat yourself, though, you can sandwich the white and chocolate versions together for the ultimate Mos Burger sandwich.
The chocolate bread is priced at 600 yen (US$5.09), and will only be on sale for a limited time, until 24 June. If you’d like to try it for yourself, don’t forget to place an order for it at your local Mos Burger beforehand, and keep an eye out for their new mascot character while you’re there!
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 ]













Mos Burger adds sliced bread to their menus in Japan
Mos Burger’s new super-thick sliced bread: Is it as good as their burgers? 【Taste Test】
Mos Burger brings back its hugely popular “White Mos Burger”, but is it any good?
Japan’s best domestic hamburger fast food chain now has croissants, but are they any good?
Mos Burger’s new French toast: A delicious breakfast with a side of linguistic challenges
A real-world Pokémon Poké Ball hotel is opening in Japan at a still-secret location [Video]
Tamagotchi evolves into a ring for its 30th anniversary, preorders now open
Japan’s most popular curry rice restaurant chain, Coco Ichibanya, might be for sale
Family Mart releases Famima convenience store products nationwide, but which ones are worth buying?
One Piece Day 2026 brings new art, music, and new cast announcements
Finally! Japan’s big three convenience store chains announce rice ball price reductions
Solo travel in Japan: Hidden beer garden in Tokyo is a haven for single visitors
Studio Ghibli unveils new anime calendars and diary planners for 2027
Onsen Egg Bukkake Udon Ice Cream makes us rethink everything we thought we knew about sweets
Hobonichi unveils new 2027 planners, diaries and stationery with One Piece, Suica Penguin, Hello Kitty and a must-buy Mini Techo
Japan’s final Penguin Suica train cards have already shipped, and when they’re gone, they’re gone
Japan approves foreign resident visa renewal fee increases of up to 967 percent, starts soon
Japan tripled its departure tax to fund tourism but is using the money on cherry blossoms and bears
Farewell Final Ceremony announced for Tokyo’s life-size Gundam statue, will stream live
Family Mart releases new Human Made Cup Noodle in Japan, with freebies for Nigo fans
Hikaru Utada sings new song in Shinkansen commercial for Japan’s Supreme Class cabins
Nike x One Piece collection brings Devil Fruits to sneakers and streetwear in Japan
12-year-old British girl who went missing in Tokyo found safe after visiting anime sites around Yokohama
7-year-old boy left behind on Mt. Fuji by his own dad
Sushi Bus: Japan’s first conveyor-belt bus lets you eat sushi while sightseeing around Tokyo
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Japanese toilet aims to attract foreign tourists but not everybody is happy about it
New Japanese vending machine at Shinkansen station sells cups of ice on platform
Study finds hundreds of people in Indonesia legally named after Naruto, Inuyasha, other anime stars
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
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
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]
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
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】
Japan’s MOS Burger replaces hamburger buns with lettuce for limited “Natsumi” range
Mos Burger’s new Ebi Ebi Fry Burger is on a whole other level
Mos Burger’s sauce-soaked Wet Burger sure is wet, but is it worth your burger bucks? 【Taste test】
Dom Dom Burger sells chicken sandwich sandwiched in two egg sandwiches
Mos Burger’s new Mac and Cheese burger: Does it taste as good as it looks?
Japanese fast food chain Mos Burger to release fish-free fish burger
Japan’s Mos Burger discontinues old teriyaki burger and rolls out new recipe, but is it as good?
Crazy new Mos burger is covered in sauce, has a lineage that spans the globe
Japanese burger chain Mos Burger replaces its buns with two halves of a giant tomato
Japan’s Mos Burger goes super-premium for summer with eel burgers that require pre-orders
Does Mos Burger’s new Muscle Burger give you muscles?
Mos Burger skips tsukimi burgers, crafts moon-viewing focaccia sausage sandwiches instead
Mos Burger adds new plant-based vegan teriyaki burger to its menu
【Lucky Bag Roundup 2017】MOS Burger fukubukuro fills us up with fast food and cute goods
Mos Burger opens fancy burger shop and bar in Ginza, Tokyo
Which Japanese chain has the best hot dog: Mos Burger, Subway, Tully’s, or Mister Donut?