
Known to many in the English-speaking world simply as rice balls, onigiri are as much a part of daily life in Japan as sandwiches are in the West. Although they’re often eaten as snacks or included along with a handful of other items as a packed lunch, for many Japanese onigiri are the ultimate comfort food; something that, no matter which part of the country they find themselves in, they can easily make or pick up from a convenience store.
Of course, store-bought onigiri can never come close to those pressed into shape by someone who knows their way around a rice cooker, but they always hit the spot nevertheless, and hundreds of thousands of these little lumps of savoury goodness are eaten every single day. But what are Japan’s most loved convenience store rice balls? And do tastes vary from chain to chain? Well, according to a recent survey, there are three onigiri fillings that Japan is especially fond of.
Always curious to know more about the onigiri eating habits of Japan, the Japanese Onigiri Association (which is a real thing and which we think is wonderful purely for that reason) got together with the country’s biggest convenience store chains–namely 7-Eleven, FamilyMart and Lawson–to analyse onigiri sales data throughout 2014. It turns out that Japan has some very clear favourites, no matter which chain they visit.
You may be able to spot a bit of a trend here…
7-Eleven Ranking

A winning combination in sandwiches for decades, tuna-mayo takes the top spot in 7-Eleven’s onigiri ranking. Compared to more traditional fillings, tuna-mayo is a relative newcomer in the onigiri world, but it’s clear that people of Japan think it goes just fine with their rice and nori seaweed.

Rich, salty salmon goes incredibly well with plain white rice, especially when warmed up. There are many varieties to be had, and salmon from Hokkaido is a firm favourite, but plain-old beni shake (“red” salmon) was popular enough to make it into the number two spot.

This one came as a bit of a surprise to us. Sekihan is most often eaten on special occasions like New Year, but 7-Eleven’s patrons evidently took a shine to the rose-tinted rice ball with its belly-filling azuki beans. Definitely one for those with larger appetites!
FamilyMart Ranking

FamilyMart shoppers preferred the simplicity of the store’s “chokumaki” (lit. “direct wrap”) style onigiri over anything else, but were even more fond of salmon than 7-Eleven shoppers, putting it in their top spot.

Nothing to see here, folks, just some ocean-dwelling poultry in a rice ball. Peculiar name aside, FamilyMart shoppers also proved that tuna-mayo is a great combination.

Okay, now this one some of you won’t have met before. A form of kelp, konbu (also written “kombu”) has long been a Japanese favourite. Slightly sweet but with a satisfying tang, konbu is not only a wallet-friendly onigiri option, it’s packed with fibre and a good source of vitamins and minerals.
Lawson Ranking

Here we go again! Once again, tuna (it’s branded “sea chicken” but it’s the same thing) takes the top spot. We’re starting to wonder if it’s the added creamy-white ingredient more than the fish itself which is bolstering this onigiri’s popularity across Japan.

It might not scream “delicious” to you and me, but konbu–this time from Hokkaido’s Hidaka region–is back. Not only that, but it’s edged out salmon to take the number-two position.

And, yep, it’s salmon again! It may be a slightly different cut (Lawson’s “harami” salmon comes from the belly of the fish, apparently), but this is still the same salty, flaky goodness Japan knows and loves. In at number three with a bullet.
Onigiri fillings aren’t limited to traditional Japanese ingredients (indeed, the Onigiri Association notes that 2014 was the year of the “meaty” onigiri, with fillings like beef and pork being popular choices), but there are a handful of fillings that Japan is clearly incredibly fond of, and we’d warrant that 2015’s sales data will once again be dominated by the above three. Unless someone manages to perfect that spaghetti bolognese onigiri I saw in one of my dreams a few nights back, that is…
What do you make of this ranking, Rocketeers? Do you have a favourite onigiri of your own? Does konbu belong in the top three or would you rather opt for something more exotic like ikura (salmon roe) or a Spam musubi? Let us know in the comments section below!
Feature image: RocketNews24
Insert images: 7-Eleven, FamilyMart, Lawson
[ Read in Japanese ]

Which convenience store onigiri rice balls are the most popular? Survey reveals surprising results
Convenience store onigiri rice balls become even more expensive…but are they worth it?
In celebration of Onigiri Day, we compare rice balls from three different convenience stores
Japanese convenience store showdown: Who’s got the best red rice sekihan rice balls?【Taste test】
Are high-end convenience store rice balls really packed with more ingredients?
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
A visit to Sri Lanka’s knockoff knockoff Uniqlo (no, we didn’t stutter) to see its rare “Pikachus”
7-Eleven Japan releases chocolate cookies that taste like freshly baked melon bread
The quest for Dragon Quest Yoshinoya figure sets: Worth taking for fans, tricky for scalpers[Pics]
Don’t judge this Kiki’s Delivery Service book by its cover, because it’s not actually a book!
How to cook shiitake mushrooms like a Japanese manga character
Japan moves to enforce language requirements for foreign nationals seeking permanent residency
Udon pudding is about to shake up the noodle scene in Japan
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Starbucks Japan teams up with Converse Tokyo for a new limited-edition collection in honour of Tanabata
Sanrio Character Poll announces winners, Hello Kitty absent from top 10 in many countries
Live-action Spirited Away stage play announces world tour with first-ever U.S. and Canadian dates
Japanese overnight sightseeing train returns for summer with ramen stops and ocean views
Tokyo has only two barley tea makers, and we visited one to see how mugicha is made
Sleep at Hoshinoya Nara Prison, one of the most unique hotels in Japan
Studio Ghibli combines anime and craftsmanship in new Totoro and Jiji Gobelin tapestry bags
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Japanese sweets brand creates new drinkable Cigare and we’re totally here for it
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
Japanese convenience store showdown – Who’s got the best ikura rice balls?【Taste test】
Which Japanese convenience store sells the best onigiri rice balls?【Taste test】
Which Japanese convenience store has the best salted onigiri rice balls?
The surprising semi-secret ingredient in many Japanese convenience store rice balls: oil
Who makes Japan’s best Spam-style onigiri convenience store rice ball? Let’s find out【Taste test】
The difference between onigiri rice balls in Tokyo and Osaka
Japanese convenience store brings rice balls back to 100 yen – Is this deal worth it?[Taste test]
Which Japanese convenience store has the best plain onigiri rice balls?
Onigiri taste test: Which convenience store will win?
What do Japanese People Put in Their Rice Balls? Top 22 Most Popular Onigiri Fillings!
Japanese convenience store’s newest rice ball filling: Nothing at all, and why we’re OK with that
Gyoza rice balls are here, and everyone agrees they look awesome, but are they? 【Taste Test】
Bizarre or brilliant? Takoyaki and okonomiyaki rice balls available in convenience stores now
As rumors swirl of 7-Eleven shorting customers on rice ball fillings, we check on their sujiko
The 10 best types of onigiri rice balls to try in Japan【Survey】