
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!
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】
Putting Japanese soy sauce on ice cream: Just crazy enough to work? 【Taste test】
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Temple with 600-year-old tree near busy Tokyo station is like a tranquil pocket dimension
New Totoro carabiner pouches are ready to clip/tag along with you on all your adventures[Photos]
7-Eleven Japan releases Uji matcha smoothies… but only at select locations
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Studio Ghibli announces first new short anime film in 8 years, exclusive to Ghibli Park
Coca-Cola Japan releases new clear coke this month, we get to try it before it goes on sale
Retro Japanese train is our new favourite office space
Japan’s purring cat cuddle cushions evolve into an even higher form of virtual pet life【Photos】
Rice balls aplenty at the Ministop senbero, but with a special twist【Japan’s Best Home Senbero】
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
Injuries on stairs in Tokyo highlight an overlooked design flaw
Move aside, convenience store egg sando – there’s a better version of the iconic sandwich in Japan
Japan’s popular bead bonsai kit is as beautiful as it is gruelling to make
Pikachu to cuddle with kimono-clad beauty on Tokyo street as part of flower art event
Pokémon hot spring footbath opening in Japan this spring
Studio Ghibli croquettes not to eat, but to keep your stuff in, going on sale in Japan[Photos]
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Japan now has a special desk for people who work at home with a pet cat[Photos]
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Uniqlo announces new T-shirts for One Piece, Naruto and more for manga publisher’s 100th birthday
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
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
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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
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 double-cheese-mayonnaise-melon-bread is a mouthful in more ways than one
The SoraNews24 ice cream showdown: A frozen nine-way battle【Taste test】
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
Ice cream in fried tofu? Taste-testing ice cream inari, a substitute for ice cream cones【Taste test】