
A different surprise than the one we’d braced ourselves for.
Here at SoraNews24, we’re not sticklers for tradition when it comes to ice cream. Heck, in the past we’ve tried two different kinds of ramen ice cream, and only really regretted half of one of them.
But even we weren’t sure if Japan’s latest unusual ice cream flavor, Creamy Mayonnaise, was such a good idea. Of course, bad ideas are kind of our area of expertise, and so we quickly snatched up a 140-yen (US$1.30) bar as soon as they went on sale.
We felt just a tiny twinge of confidence in the idea when we remembered that the product, officially the Calorie Monster Cherio Creamy Mayonnaise Flavor, is made by Morinaga, which produces some of Japan’s best-tasting non-crazy frozen treats too. Morinaga proudly boasts that it’s created “Japan’s first” mayonnaise ice cream, though we’re not sure how much pride it should take in that since the previous lack of such a dessert might not be because no one else thought of it, but because everyone else did think of it and then immediately decided it was too weird to even try to sell.
Morinaga had the necessary abundance of courage and/or lack of common sense to bring the concept to market, though, and so here we are. As shown in the diagram above, the Creamy Mayonnaise follows the lead of the rest of the Cherio line by having an identically flavored core and coating with a second flavor in between. However, unlike the chocolate/vanilla of the standard Cherio, this one has white chocolate in the center and cookie-crumb-enhanced outside edge, with the majority of the space taken up by mayonnaise ice cream.
▼ Our dissection got pretty messy, but you can see the white chocolate circled in blue and the mayonnaise circled in red.
We braced ourselves for a shock as we took a bite, and we were definitely surprised…by how normal it tastes! Really, the strongest impression was still white chocolate, so much so that at first, you might not even be able to discern the presence of the Creamy Mayonnaise’s marque ingredient. On subsequent bites, we started to notice a bit of saltiness along with a rich, slightly oily element, but for the most part, the white chocolate steals the show.
On the plus side, this means the Calorie Monster Cherio Creamy Mayonnaise Flavor tastes great, and even when you do notice the mayo, the fact that Japanese mayo has a thicker consistency and less sourness than Wester varieties means it’s not really a problem, but it doesn’t really deliver on the craziness we’d been anticipating with a mix of excitement and fear. Naturally, when life doesn’t give you quite enough craziness, you have to figure out ways to add some craziness to life, so we grabbed a pair of chopsticks, scraped a large dollop of mayonnaise ice cream away from the white chocolate…
…and plopped it onto a salad.
▼ PLOP!
Unfortunately, the bar’s filling is, as we mentioned before, mayonnaise ice cream, and not just straight-up mayo. Because of that, it was a little too cold, and also too sweet, to really work as a salad accompaniment.
In the end, you’re better off sticking to just enjoying the Creamy Mayonnaise Cherio as-is, and while it might not blow your mind like the name might make you expect, this is definitely a superior choice to fish or snake ice cream.
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 ]
Follow Casey on Twitter, where he refuses to give up hope that Morinaga will bring back the orange-flavored Ice Box.






Morinaga Milk Industry unveils Japan’s first mayonnaise-flavored ice cream!
This shop combines traditional Japanese sweets with…mayonnaise?!?[Taste test]
Taste test battle! The new Mister Donut ice cream bar vs. a frozen Mister Donut donut【Taste test】
Osaka’s powerful Crab Ice Crab doesn’t pull any punches【Taste test】
We try Tokyo restaurant’s crab ice cream that tastes more like crab than cream【Taste test】
Family Mart Japan installs red-eyed “Monster Wolf” to keep bears away from convenience store
Starbucks Japan reopens Shinkansen platform store after redesigning it for speed
Tokyo cops arrest foreigner for suspected visa violation, don’t know what new residence cards look like
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Japanese theme park adding Immersive Death Game with a “bomb collar” you have to wear
Japanese sweets brand creates new drinkable Cigare and we’re totally here for it
TKG Debate: What’s the best way to eat Japan’s beloved raw egg comfort dish?
Starbucks Japan creates special drink bottle bags, adorable stickers for all 47 prefectures[Pics]
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
The adorable, delicious joy of the Totoro cream puff gift box[Taste test]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
7-Eleven Japan to start selling Vietnamese banh mi sandwiches this summer
Starbucks Japan releases new Frappuccino, tea and soda drinks for summer
“Phantom Egg Shop” opens in Japan, with a dozen rare Japanese varieties
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Uniqlo reveals third round of massive 100-year-anniversary manga T-shirts for Jump’s Shueisha
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
New official Ghibli anime food cookbook will teach you how to make Ponyo’s ramen and more
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels 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]
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Putting Japanese soy sauce on ice cream: Just crazy enough to work? 【Taste test】
ZOMG! ICE CREAM! Taste-testing the best autumn-flavored ice cream in Japan
What is Japan’s new “summer matcha” ice cream flavor from confectioner Morinaga?【Taste test】
Sliced mayonnaise and white chocolate now exist in Japan, bringing sandwiches to glorious new era
Avengers ice cream assembles at Baskin-Robbins Japan【Taste test】
The SoraNews24 ice cream showdown: A frozen nine-way battle【Taste test】
The double-cheese-mayonnaise-melon-bread is a mouthful in more ways than one
Ice cream with Japanese dashi kelp stock shocks us enough to try it【Taste test】
Is Japan’s new pudding ice cream bar too much deliciousness to handle? 【Taste test】
Tokyo’s spicy cod roe ice cream: An unexpected dessert that tastes about like what you’d expect
5 of the best ice creams to try in Japan right now【Taste Test】
This ice cream cake has been sold in Japan for 40 years, but it’s almost unknown here
We try Cup Noodle Ice Cream, filled with shrimp, meat, eggs, chives, and madness 【Taste test】
Miso powder on ice cream? Don’t knock it until you’ve tried it, we say!【Taste test】
Häagen-Dazs Japan recommends ice cream with tomato and avocado, so we trust them and try it
Japan’s new Ice Cream Fondue Pizza promises the great taste of ice cream and mushrooms together!
Häagen-Dazs releases new mochi ice cream, and it’s amazing! 【Taste test】