
We find out if this sell-out hit product is worth the hype.
Onigiri rice balls are commonly made by hand in Japan, but they can be difficult to create, especially when the rice is hot as it makes it hard to hold, distorting the shape. That’s where rice specialists Akomeya are here to help, with an exclusive rice ball mould that’s so popular it sells out every time it becomes available.
According to reviews from customers, the mould helps to make beautiful onigiri that look like something you’d buy at a fancy department store. There are two sizes available, small and large, and as we were curious to find out if the mould lived up to the hype, we played things safe by opting for the smaller version.
▼ Sylvanian Families characters not included.
First impressions were undeniably good, as the cypress wood had a beautifully fresh, woodsy aroma. This not only adds flavour to the rice but helps to improve it, as the wood absorbs excess moisture so you can enjoy the rice in its optimal state.
To use the mould, first moisten it with water and then fill the cavities with rice up to the halfway point. Then add your favourite filling, like an umeboshi pickled plum, as seen on the left of the image below, before covering it with rice (right, below).
Though the rice was piping hot it had no trouble settling in place and the filling stayed put in the centre which was impressive, seeing as it can move about a bit during hand-moulding. To determine which was better — wood-moulded or hand-moulded — we crafted a rice ball by hand, using cling wrap to keep our fingers clean and fashion it into a triangular shape.
▼ The rice was very hot to hold, even through the plastic wrap.
Comparing the completed rice balls, we found that the rice balls made with the mould (right, below) had a more beautiful shape.
Upon tasting them both, the wood-moulded onigiri (right, below) won yet again, as the grains of rice were noticeably fluffier. Looking closely, you can see that the grains of rice in the hand-moulded variety are flattened, while the grains from the wood mould remained plump, despite being packed down quite tightly.
As for the filling, it seemed to be confined to one small section in the hand-moulded type, whereas the wood mould (right, below) helped to disperse it more evenly, creating a more well-balanced flavour.
We definitely preferred the wood mould, rating it higher in terms of the resulting flavour and texture of the rice ball. However, would it still do well with different ingredients?
▼ Left to right: Plum Chirimenjako (dried young sardines), Green Onion and Bacon, Cheese Okaka (finely chopped dried bonito flakes), Furikake (dried seasoning) with Nori (seaweed).
As you can see, the wood mould did a fantastic job yet again, but we did find it had one weakness — when you add rice that’s been blended with large ingredients, like green onion and bacon, it creates gaps in the rice ball, causing it to break apart when you hold it in your hand.
That’s easily fixed though, because instead of adding the ingredients to the rice before it gets to the mould, simply add them as a filling instead and you should have no problems.
▼ Oh, and you’ll want to have a rice scoop handy to help pat the rice in, as it’s hot to touch.
After using the mould, we can safely say it exceeded our expectations, so much so that we’re kind of lamenting the fact we didn’t purchase the larger size as well. Luckily for us, though, the large size is still an option as it’s now back in stock, along with the small version, after months of being out of stock due to popularity. It certainly is worth the hype, and deserves to be on your shopping list when visiting Japan, where you can purchase it at Akomeya stores and online, priced at 2,200 yen (US$15.11) for the small and 2,530 yen for the large.
Related: Akomeya Tokyo, Rakuten Market
Photos ©SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!











Which Japanese convenience store has the best salted onigiri rice balls?
Say hello to the Big Bomb Onigiri, a beast of a Japanese rice ball
The polite way to eat onigiri rice balls sparks debate online
Tapioca onigiri brings boba to the world of rice balls
Should you warm up your convenience store onigiri rice balls in the microwave?【Taste test】
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
99-year-old woman rescued while attempting to climb Mt. Fuji
Which country’s foreign tourists spend the most money per-person in Japan? Hint: Not the U..S. or China
Starbucks Japan adds a new summer Frappuccino to the menu, but is it as refreshing as it looks?
Brand new Shinkansen bullet train unveiled in Japan… but it won’t carry passengers
Foreign hiker on Mt. Fuji loses consciousness and dies, becoming climbing season’s second fatality
Cup Noodle and Columbia team up for a weird and wonderful T-shirt that’s very Japanese
Japan now has human refrigerators inspired by Japanese vending machines
Cup Noodle releases cold-water instant ramen in Japan, but can it really be made with just cold water?
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Japanese convenience store releases Japanese convenience store-flavor fried chicken
Family Mart’s new Tokyo flagship convenience store doesn’t feel convenient, but is that a problem?
Starbucks Japan releases new Discovery Series collection celebrating local regions and traditions
Teen girl in Japan refuses to be victim, personally escorts train pervert to police for arrest
Is Japan’s tourism boom slowing down? Foreign visitor numbers fall for first time in five years
Starbucks Japan releases exclusive new Bearista collection…with beary cute details
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
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
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
The Big Bomb Onigiri Japanese rice ball helps us conquer mountain race but conquers us in the end
Onikun: Epic onigiri so big they’re half demon, half rice ball
Lawson now sells old rice as “vintage” onigiri in Japan
Space Onigiri: Do these long-lasting Japanese rice balls taste any good on planet Earth?
Japanese convenience store packs a whole bento into an onigiri rice ball
The 10 best types of onigiri rice balls to try in Japan【Survey】
Japanese drugstore sells onigiri at pre-stupid era prices, but how do they compare to 7-Eleven?
Which Japanese convenience store has the best plain onigiri rice balls?
Onigiri without the nigiri – Japan’s traditional rice balls get an update
Beyond rice balls: How to make an edible onigiri rice cat【Video】
The surprising semi-secret ingredient in many Japanese convenience store rice balls: oil
Japanese vending machine sells…onigiri cakes!?
The difference between onigiri rice balls in Tokyo and Osaka
Onigiri in Paris: Small lunch shop brings traditional Japanese rice balls to France
Drinkable rice balls appear in Japan, allow you to chug the country’s favorite snack on the go
What’s it like to eat an enormous panda onigiri rice ball that weighs over two pounds?
Haneda Airport’s new rice ball stand — Sister shop Tokyo’s best out-of-the-way onigiri spot