
Actually, there aren’t many cons.
Soy sauce is a condiment dating back millennia, and the process of making it has been refined in just about every way imaginable at this point. Multiple varieties with subtle flavors to match certain dishes have been developed and the process of brewing can range from state-of-the-art mass production technology to traditional wooden barrels.
But despite all this surprises still emerge, such as the Fluffy Foam Soy Sauce (Mokomoko Awa Shoyu) that our writer Maro stumbled upon by chance at a highway rest stop. She would have almost been convinced the two types of bottles were hand soap had they not been stocked prominently among an entire shelf of soy sauces.
There were two types of foaming soy sauce: tamari soy sauce which has a deeper flavor and lends itself well to sashimi; and tamago kake soy sauce which is tailored for the classic Japanese dish of raw egg on rice known as tamago kake gohan.
In dispensing soy sauce in a foam there are said to be numerous benefits. One is that it reduces salt consumption without altering that sauce itself. Since this dose of soy sauce is largely composed of air, you get a heightened sense of its natural taste while actually eating less of it.
Not only that, but as a foam the soy sauce doesn’t run all over the place. You can pick it up and fine-tune the amount used with utensils.
This also means that rather than pouring the sauce in a separate dish, you can just add a dab of tamari right next to your sashimi. This not only adds to convenience but can be used in decorative serving ideas.
Maro sampled the tamari first and found that the foam melted quickly in her mouth but the taste was very firm, maybe even stronger than usual. The tamago kake sauce was noticeably lighter in color and has sugars to complement tamago kake gohan.
Once again, because the foam stays in place, Maro could easily get a nice photo of it in action. Normally, soy sauce would simply seep into the rice and become hard to see. Also once again, the taste was not weakened at all by being in a foam state.
With a nice flavor, health benefits, and introducing a new way to serve and eat soy sauce, Fluffy Foam Soy Sauce seems perfect in every way. However, Maro did run into a problem related to the store’s display.
▼ “Mysterious product! A soy sauce that doesn’t stain your clothes! The cutting-edge of soy sauce! Please try it!”
Keeping your clothes free of unsightly soy sauce stains is a very bold claim, but as Maro already saw. Fluffy Foam Soy Sauce does sit on top of food instead of soaking in. Maybe it does work…
It’s important to note that the manufacturer itself, Yamakawa Brewing, in no way recommends getting their soy sauce foam in contact with clothing ever. Still, in the spirit of accurate reporting, Maro got a white shirt from her closet and put the ad’s theory to the test.
However, as we can plainly see, the shirt ended up quite stained.
So it would seem that the fatal flaw in Fluffy Foam Soy Sauce is that it’s so great it makes people overconfident in what it can do. If you do purchase one of these cans for about 500 yen (US$4.38) each remember to just enjoy it as a topping and not get carried away.
Related: Tamariya Fluffy Foam Soy Sauce
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 ]










Celebrate TGK Day with a classic of Japanese kitchens, but with some luxurious ingredients
Trying some Umui sauces made only on a remote Japanese island with a population of 50【Taste test】
Clever trick fights soy sauce stains, is a godsend for people clumsy with chopsticks 【Video】
We found the prettiest TKG ever at a restaurant specializing in raw eggs on rice in Tokyo
We tried cocoa soy-sauce paste and opened up a whole new world of possibilities【Taste test】
Kanji ice cream becomes a sell-out hit in Japan
This Tokyo Station sweets sensation sells out daily, but we finally got our hands on it
Tokyo’s life-size Gundam anime mecha statue will be removed this summer
Self-proclaimed Americans arrested for breaking into Punch the monkey’s Japanese zoo habitat
Ichiraku Ramen-inspired ramen sets from Naruto anime pay homage to Naruto, Sasuke, and Sakura
Hundreds of rose bushes in bloom at Tokyo’s off-the-beaten-path, next-to-the-tracks flower street
Studio Ghibli’s president is leaving the company. Will it change how they make anime?
Studio Ghibli adds mini pillows and massive mats to its anime merchandise store in Japan
Six towering historical warrior floats will grace Fukui’s Mikuni Festival for three days
The top 12 incomprehensible school rules, as chosen by high school students
161-year-old Kyoto confectionary maker releases new edible Pokémon lineup
7-Eleven Japan now has ramen machines…but only at 41 stores
7-Eleven Japan is releasing Greedy chocolate chip and whipped cream sandwiches
Starbucks Japan adds a new Frappuccino and Milk to the menu, but are they worth the calories?
Don’t miss the Tokyo Tower City Light Fantasia ~Summer Landscape 2026~ event during your travels
Starbucks Japan releases two new “chunky” drinks… and matching gel designs for our nails
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Japan now has gyoza doughnuts, and they taste like no other doughnut we’ve tried before
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]
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】
No more using real katana for tourism activities, Japan’s National Police Agency says
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Transparent soy sauce is a thing — we saw it, we tried it, we’re confused by it
“Powder Soy Sauce” is so much more than its name suggests【Taste test】
Beautiful red soy sauce from Japan uses no artificial colors, tastes like nothing else
Soy sauce on pancakes? We try the newest dessert idea from a century-old soy maker【Taste test】
American Reddit post claims this soy sauce will change your life【Taste test】
Putting Japanese soy sauce on ice cream: Just crazy enough to work? 【Taste test】
Sales for clear soy sauce are up, and here’s one way to use it to beat the heat with a cold treat