
Find out if mixing natto 50, 100, 500 or 1,000 times makes it taste less or more like smelly socks.
One of the most divisive foods in Japan is natto, or fermented soybeans. While first-time eaters might describe the texture as snot-like and the taste like old socks, those who love natto will tell you it gets more delicious the more you mix it. But the question is: How many times should you actually mix it for the best flavour?
We decided to get to the bottom of the matter by mixing a pack of natto 50 times, then 100 times, then 500 times and then… 1,000 times. The change in look and texture was something to behold, so let’s start the process by opening our pack, removing the plastic covering, and pouring over the sauce.
Now all that’s left to do is mix it with a pair of chopsticks, turning the beans over and over and over again. Surprisingly, 50 rotations went by in a flash, and this was the result.
Some of the beans were still clumped together, giving it a chewy texture, and the stickiness was a bit on the light side. It felt as if the sauce hadn’t blended into the natto as well as it could have, and it wasn’t as well mixed as we would have liked it to be.
▼ So… time for more mixing.
After another 50 rotations, we now had a natto that had been mixed 100 times, and this was the result.
Compared to the previous mix, the stickiness had clearly increased, and the texture was decidedly fluffy. With this much mixing, most of the beans had separated so you could really get a sense of each individual bean. Without ever having counted before, this was pretty much how we usually mix up our natto, so it was just how we like it.
▼ The Goldilocks of natto.
Now it was time to find out what natto mixed 500 times looks like. However, at the 200 mark, we felt our arm start to seize up, and as we pushed through the pain to get to the 300 mark, we paused to find that the natto had turned white like snow, with its distinctive aroma clearly wafting up from the tray. Although we’d imagined it would become fluffier with the extra mixing, it actually became gooier, with the light-and-airy look quickly fading with every turn. Still, we continued until we reached the 500 mark, when the natto looked like this.
Despite having eaten natto hundreds of times before, we’d never seen, or tasted it, like this. The texture was incredibly smooth, unlike anything we’d ever experienced before, and the salty flavour of the sauce had mellowed out so the taste and aroma of the natto was now more intense.
▼ We were surprised by how clearly the taste and texture had changed.
Now it was time to work through the pain again, mixing and mixing and mixing and mixing… until we reached the 1,000 mark, which gave us this.
The appearance wasn’t too dissimilar to the natto that had been mixed 500 times, but how would it taste?
To our surprise, it tasted exactly the same! Despite the additional 500 rotations, there was no discernable difference in taste or texture, so our arm workout had all been in vain.
▼ To recap, this was the evolution of natto after each mixing milestone, starting with 50 turns at the top left, and ending with 1,000 at the bottom right.

Of course, results may vary depending on the type of natto you use, and personal preferences play a role in determining the ideal number of mixes, but you can’t go wrong with using 100 rotations as the yardstick for a good natto. After 300 turns, the natto doesn’t change much at all, so unless you want to give yourself an arm workout, we don’t recommend going beyond that number.
It just goes to show that there really is magic in these beans — not only can they change in taste, texture and appearance, they’re also said to be incredibly good for your health… if you can stomach eating them.
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 ]













Our resident natto lover tries Mythical Natto from Hokkaido and gets spirited away【Taste test】
We tried making natto the old-fashioned way, and the result was unexpected but delicious 【SoraKitchen】
We go looking for the best natto (fermented soybeans) in all of Japan【Taste test】
Natto for beginners? How to half-make Japanese fermented soybeans at home【SoraKitchen】
Japan’s first made-to-order natto store will make you fermented beans without the putrid smell
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Don’t judge this Kiki’s Delivery Service book by its cover, because it’s not actually a book!
One Piece docking at Round 1 amusement centers in both Japan and the USA
Starbucks Japan teams up with Converse Tokyo for a new limited-edition collection in honour of Tanabata
Studio Ghibli releases a musical diorama based on a touching anime scene from My Neighbour Totoro
Japanese overnight sightseeing train returns for summer with ramen stops and ocean views
KFC Japan creates spicy summer fried chicken chips together with Calbee
Blind Tokyo commuter explains the easiest place for him to stand while riding the train
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
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
Sleep at Hoshinoya Nara Prison, one of the most unique hotels in Japan
Japanese man’s gross conveyor belt sushi social media prank video gets him a 500,000-yen fine
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
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
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]
Could this be the secret to get Americans to actually like natto (Japanese fermented soy beans)?
Pork Cutlets with Fermented Soybeans? All-You-Can-Eat Natto Part 2!
The most expensive natto in Japan – Eating the “black diamonds” of Tanba Kuro【Taste test】
All-You-Can-Eat Fermented Soybeans for $8.50! Choose From Eight Types of Natto!
The surprising reason natto (fermented soybeans) are hard to swallow for many Japanese surfers
We try a new natto coffee ice cream that took 17 months to perfect
We spice up our fermented soybeans with curry powder flavored natto【Taste Test】
Nattoku! Factory offers free factory tours of a famous natto brand production process
There’s no reason not to play with your food with this natto in Nanoblock form
Natto-infused ramen is a thing — we tried it, we love it【Taste test】
Mizkan develops world’s most “beautiful” natto, Mr. Sato takes it for a spin
We head out to Kyoto to eat a delicious crepe crammed with fermented soybeans, rice【Taste Test】
New magic powder purports to make natto edible even for bean-haters
A pack of natto (fermented Japanese soybeans) a day keeps the death away according to study
That time we were either genius or insane to eat natto with Yukimi Daifuku per official advice