Something every guidebook mentions about table manners in Japan is that, while almost every restaurant and home keeps a bottle of soy sauce on the table, it’s there to add to things like sashimi and grated radish, and not to be poured on white rice.
This isn’t to say that people in Japan always eat their rice plain, though. A recent Internet popularity poll pitted four of the country’s top rice toppings against each other in a battle royale.
In this corner, mentaiko, also known as spicy cod roe. A specialty of Fukuoka Prefecture, mentaiko is the odds-on favorite going into this bout, due to the success of a recent limited-time promotion by Internet retailer Rakuten in which jumbo-sized 1 kg (2.2 pound) packs of it virtually flew off the website’s virtual shelves.
Playing the role of intimidator in this contest is natto. The bane of exchange students doing homestay in Japan for several decades now, natto is a mass of fermented soybeans, and smells exactly how you’d imagine it to. Mmmmn!
Our next challenger is umeboshi, or pickled plum, a long-time veteran of the so-called “Japanese flag boxed lunch,” consisting of a single one of these reddish preserved fruits placed in the middle of a tray of rice.
And finally, our lone overseas entrant is good old kimchi, which despite hailing from Korea has made considerable inroads into the Japanese diet.
So when the dust settled, who came out on top in this culinary throwdown?
Mentaiko, and it wasn’t even close! The fiery fish eggs captured the top spot with 43.3 percent of the survey’s 152,286 respondents saying it was their favorite out of the bunch.
“I probably end up eating more natto, but the one I really want to eat the most often is mentaiko,” explained one participant. Others pointed to how the topping stimulated their appetites, with one commenting, “I can really put away a lot of rice if there’s mentaiko on top of it.” In a few cases, mentaiko won by default, as some people aren’t fans of the admittedly acquired tastes of the other three toppings.
Trailing mentaiko was natto, with 31.4 percent of the vote. “I’ve liked natto since I was a kid, and since I recently found out it’s really good for you, I’ve been eating it every day,” wrote one fan. Aside from its health benefits, natto also picked up a few votes through process of elimination. “I don’t care for the pudding-like texture of mentaiko, and I worry about the sodium content in pickles like umeboshi,” one respondent gave as the rationale for his selection.
Far behind in third place was umeboshi, at just 11.8 percent. Nonetheless, its supporters were adamant in their choice. “I love my family’s homemade umeboshi so much that I just can’t eat the store-bought ones anymore” gushed one. Others were won over by the pickled plums’ long shelf-life and restorative properties for people who feel wore out by the summer heat.
Kimchi finished with a paltry 8.5 percent, scarcely more than the 5 percent who went to “I don’t like any of them” town with their answer. That said, kimchi is popular enough that it’s readily available at just about all Japanese supermarkets these days, and one participant remarked that he can no longer imagine breakfast without it.
There was relatively little variation in responses from different age groups, with the exception of participants aged 10 to 19. Only 30.7 percent of this demographic chose mentaiko as their favorite, a more than 10 percent drop compared to the survey group as a whole. Participants in this set gave the number one slot to natto, at 31.9 percent, and also gave the largest response of any age group for “none of the above” at 9.6 percent.
Prices for mentaiko tend to be higher than the other candidates in the survey, and it’s also the most likely to be eaten as a snack with alcoholic beverages. These two factors were most likely the reason for the topping’s reduced popularity among younger eaters, showing that although adulthood brings the responsibilities of work and taking care of yourself, it also offers the upsides of beer, disposable income, and spicy fish eggs.
Source: Shunkan News

The top 30 foods that go best with white rice, according to Japanese netizens
The 10 best types of onigiri rice balls to try in Japan【Survey】
What do Japanese People Put in Their Rice Balls? Top 22 Most Popular Onigiri Fillings!
Curry rice, to mix, or not to mix? That is the question survey attempts to answer
What’s the most popular way to prepare Japan’s beloved breakfast dish, Tamago Kake Gohan?
7-Eleven Japan’s ramen-cooking robot whipped us up a bowl of noodles【Taste test】
Mr. Sato accosts award-winning actor Hideaki Ito【Interview】
Large amount of supposed human organs left in Osaka marketplace
A whimsical Ghibli-like world captured in beautiful GIFs you can stare at all day
A Japanese dating app matched our bachelorette with a Buddhist monk, and she learned some things
Starbucks Japan releases new zodiac chilled cup drink for 2026
Yoshinoya adds first-ever chain-wide ramen with new beef and pork-broth noodle hot pot meals
“THIS is Pork!” 7-Eleven’s pre-made chashu pork is here to elevate your instant ramen【Taste test】
7-Eleven now sells rice burgers in Japan, blurring the line between fast and convenience store food
Randy’s Donuts vs. Krispy Kreme — Who is Japan’s king of glazed donuts?
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Is this the most relaxing Starbucks in Japan?
Starbucks on a Shinkansen bullet train platform: 6 tips for using the automated store in Japan
Street Fighter Hadouken Churros to be launched and eaten in Tokyo, Okami pudding on offer too
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Japanese train company is letting fans buy its actual ticket gates for their homes
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Nintendo’s Kirby now delivering orders at Kura Sushi restaurants, but not in Japan
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Sanrio theme park in Japan announces plans to expand into a Sanrio resort
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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】
The top 10 annoying foreign tourist behaviors on trains, as chosen by Japanese people【Survey】
No more using real katana for tourism activities, Japan’s National Police Agency says
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Japan’s top 10 food travel destination prefectures【Survey】
Spending for pickled umeboshi among young Japanese people is halved from 20 years ago
We try “The Pope’s Rice,” one of the rarest types of Japan’s favorite grain
What are Japan’s best, and most unique, regional rice balls?
THAT MUCH for white rice and one tiny plum? Eating Japan’s most-expensive “cheap” bento【Taste test】
Chocolate to Put on Rice – The crazy condiment from Japan for when white rice is just too plain
Rice Pizza?! Pizza Hut creates a new base for customers in Japan
Japan’s top agriculture politician resigns after backlash to saying he’s never paid for rice
Pizza Hut’s new rice pizzas debut in Japan, but are they any good?
New Japanese internet ad features … the 10-second fried rice challenge! 【Video】
Japan’s first made-to-order natto store will make you fermented beans without the putrid smell
What’s the best way to eat Japanese cream stew and rice, “together” or “separate?”【Survey】
Japan’s most popular curry rice restaurant chain losing customers as it raises prices
Japanese salted plum industry in dire straits, according to umeboshi company’s tweet
All-you-can-eat stinky fermented soybeans come to Ginza, if that’s your thing
Leave a Reply