If you ever visit Japan and want to sample one of the staples of local cuisine, find a convenience store and grab an onigiri, or rice ball. Easy to make, plentiful in variety and an essential component of any bento lunch, the onigiri is to Japan what the sandwich is to the West.
But with so many different fillings, how do you know which onigiri to try out? If you want a taste of the REAL Japan, you need to eat what REAL Japanese people are eating, which is why we’d like to share with you this REAL list ranking the most popular onigiri fillings in Japan.
The list comes from a survey taken last month by Japanese internet research group My Voice, which polled 11,581 people about what food they like to stuff in their balls of rice. The results are as follows:
1. Salmon – 66.9%
2. Tarako (salted cod roe) – 48.7%
3. Mentaiko (seasoned cod roe) – 47.8%
4. Tuna & mayonnaise – 47.2%
5. Konbu (dried kelp) – 42.2%
6. Umeboshi (dried Japanese plum) – 41.1%
7. Katsuo (dried bonito) – 36.3%
8. Takikomi gohan (seasoned rice steamed with vegetables, meat or fish) – 30.8%
9. Baked onigiri – 30.1%
10. Takana (leaf mustard) – 29.0%
11. Tenpura – 26.6%
12. Ikura (salted salmon roe) – 25.7%
13. Osekihan (rice steamed with red adzuki beans) – 21.3%
14. Minced chicken – 20.0%
15. Fried rice – 15.6%
16. Nikumaki onigiri (pork soaked in a soy sauce base) – 15.1%
17. Salt (no fillings, just salted rice. It’s better than it sounds.) – 14.7%
18. Grilled beef rib – 14.4%
19. Stewed pork – 12.1%
20. Eel – 9.2%
21. Omelette & ketchup – 9.1 %
22. Cheese – 4.4%
23. Other – 3.7%
In addition to fillings, participants were also asked a number of questions related to their onigiri eating habits.
For example, while 99% of participants answered that they like onigiri (told you everyone eats them!), 62% of them said they “more or less” like it whereas only 35% said they are “extremely fond of” the food.
85% of participants said they buy onigiri at convenience stores (as opposed to supermarkets-and believe me, they’re no good) and 76% said that when they eat onigiri, it’s during lunch.
One interesting finding was that while 62% of people said they would eat an onigiri made by someone they know, only 30% said they would eat the onigiri crafted by an unfamiliar or unknown hand, surely the legacy of 16th century ninja poison rice ball assassinations.
Source: DietClub

Convenience store onigiri rice balls become even more expensive…but are they worth it?
The 10 best types of onigiri rice balls to try in Japan【Survey】
As rumors swirl of 7-Eleven shorting customers on rice ball fillings, we check on their sujiko
What are Japan’s best, and most unique, regional rice balls?
Say hello to the Big Bomb Onigiri, a beast of a Japanese rice ball
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
Starbucks Japan teams up with Converse Tokyo for a new limited-edition collection in honour of Tanabata
Japanese overnight sightseeing train returns for summer with ramen stops and ocean views
Sanrio Character Poll announces winners, Hello Kitty absent from top 10 in many countries
7-Eleven Japan has a lot of famous food, but its new burrito needs to be on your radar
Studio Ghibli releases a musical diorama based on a touching anime scene from My Neighbour Totoro
Japanese train company brings back beloved “patapata” departure board…with a clever digital twist
One Piece docking at Round 1 amusement centers in both Japan and the USA
Live-action Spirited Away stage play announces world tour with first-ever U.S. and Canadian dates
Tokyo has only two barley tea makers, and we visited one to see how mugicha is made
Pikachu brings electric style to brand-new Pokémon G-Shock watch featuring every stater trio
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
Blind Tokyo commuter explains the easiest place for him to stand while riding the train
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
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
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
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Which Japanese convenience store sells the best onigiri rice balls?【Taste test】
The difference between onigiri rice balls in Tokyo and Osaka
Which convenience store onigiri rice balls are the most popular? Survey reveals surprising results
Bizarre or brilliant? Takoyaki and okonomiyaki rice balls available in convenience stores now
Rice balls aplenty at the Ministop senbero, but with a special twist【Japan’s Best Home Senbero】
Japanese convenience store packs a whole bento into an onigiri rice ball
Lawson now sells old rice as “vintage” onigiri in Japan
The nine best onigiri fillings as chosen by an American
Which Japanese convenience store has the best plain onigiri rice balls?
Onikun: Epic onigiri so big they’re half demon, half rice ball
Made-to-order onigiri rice ball hotel breakfast buffet in Tokyo is open (and awesome) to all
7-Eleven under fire in Japan for mysterious holes in their onigiri rice balls
Tapioca onigiri brings boba to the world of rice balls
The Big Bomb Onigiri Japanese rice ball helps us conquer mountain race but conquers us in the end
Japanese convenience store brings rice balls back to 100 yen – Is this deal worth it?[Taste test]
Survey ranks convenience store rice balls – salmon, sea-dwelling poultry & plants steal the show