
Try this fish substitute if you’re trying to cut back on seafood!
The world has come a long way in terms of meat substitutes, with meatless beef bowls, soy-based fried ham cutlets, and plant-based burgers readily available at restaurants all over the world. But what we haven’t seen is a good meatless substitute for fish. At least, not until now.
We happened to be shopping around online when we found this “Future Fish Marude Fish Maguro” (“I can’t Believe It’s Not Fish! Tuna”), which looked exactly like real raw tuna. Of course, being big sushi fans, we absolutely had to try it.
*Note: This article contains an affiliate link, so clicking on it could lead to a portion of sales coming back to SoraNews24.
Wrapped tightly in a clear vacuum-sealed pack, the Marude Sakana Maguro arrived at our door frozen, so we put it in the fridge to defrost for about a day. When it was ready for consumption, we removed it from its pouch and patted it dry with paper towels. The result was so like a real slab of raw tuna meat, we couldn’t believe it wasn’t!
It was a deep red color with white sinew lines and a slight luster that made it look very convincing. We couldn’t help but wonder what it could be made of, so we checked out the ingredients. The first three were konjac flour, salt/gelling agent, and trehalose, an ingredient to add sweetness and enhance flavor.
Konjac flour…interesting. Konjac is a starchy root vegetable, which in Japan is ground into a flour and used to make the jelly-like slabs popular in Japanese cooking known as “konnyaku”. The use of it in a tuna substitute got us wondering if it was going to taste just like konnyaku instead of tuna.
Only one way to find out!
We decided to prepare it just like we would ordinary fresh tuna: as sashimi. When we cut it into slices, it maintained its form, just like real tuna would. It was so convincing we truly wouldn’t believe it was made from konjac flour if we didn’t already know.
Like real tuna sashimi we dipped it in soy sauce before tasting.
Because it looked so much like tuna sashimi, we were physically and mentally prepared to eat tuna sashimi, even though we knew it wasn’t. So while the texture was pretty close to what we expected, the flavor was a little bit jarring. It was missing that sort of viscous umami of tuna that we know and love, so it took our taste buds a moment to catch up to what our brain knew: that this was not, in fact, real tuna.
It was quite a strange experience.
Sashimi-style Marugoto Sakana Tuna was a bit of a bust, so we decided to try a method of preparation recommended by Green Culture, the product’s retailer. “Eat it together with avocado in a Zuke-don (Marinated Fish Bowl), or in a California Roll!” they said on the product’s page.
Zuke-don it is! We marinated our fishless tuna in soy sauce, warmed-up mirin, sake, and garlic for 30 minutes. Then we placed it atop some white rice alongside slices of avocado.
As before, its appearance really made us pause. How could this not be real tuna?!
A taste test revealed that Zuke-don is a far better way to eat Marugoto Sakana Maguro. With the sauce thoroughly permeating the fake meat, it was much harder to distinguish this replacement from real tuna. The avocado pairing made a big difference too. It was totally strange, but definitely delicious.
This fish substitute would work perfectly in a Hawaiian poke bowl, or prepared like Korean yukhoe (seasoned raw beef) without the egg, or even in temaki, rolled into a lose cone of seaweed with other sushi ingredients. As we were munching away, we dreamed up lots of ways to use it!
You can find Marude Sakana Maguro from the Green Culture Online Store for 990 yen (US$6.57) per package, not including shipping. If you’re on a plant-based diet or can’t eat fish, raw or cooked, this could be a great option to add to your repertoire! Just be aware that unlike real tuna, it has very little protein in it, so be sure to get your daily requirements from elsewhere.
Green Culture Online also has other plant-based products, including Marude Sakana Salmon, Marude Negitoro (raw tuna and onions), and meatless chicken nuggets and sausage, so it could be a good resource to expand your weekly meal plan. And if you’re trying to cut back on meat, definitely also check out this Tokyo restaurant that serves food that Buddhist monks eat. It almost converted our meat-loving reporter Mr. Sato to a vegetarian!
Images © SoraNews24
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
[ Read in Japanese ]







We try NEXT MEATS meatless yakiniku: Does it live up to our meat-lover expectations?
Japan’s biggest ham company is making “tuna” that contains neither ham nor fish
We visit the new Japan branch of Wayback Burgers, try their vegan set, notice a big problem
We try Japanese desserts made with bits of tuna. What could go wrong? 【Taste test】
Visit to a Japanese fish market has us trying tuna eggs for the first time【SoraKitchen】
Japanese convenience store releases Japanese convenience store-flavor fried chicken
Cup Noodle releases cold-water instant ramen in Japan, but can it really be made with just cold water?
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
Japan’s “edible fireworks” wagashi sweets return, but only for a limited time [Photos]
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Japan now has human refrigerators inspired by Japanese vending machines
Giant Snorlax, other snoozing Pokémon appear in Yokohama for Pokémon Sleeping Faces Research [Pics]
Japan’s popular curry chain Cocoichi has an elusive delivery-only noodle menu
Family Mart’s new Tokyo flagship convenience store doesn’t feel convenient, but is that a problem?
Mos Burger opens Mosh Burger & Bar in Ginza, but is it fated to be a short-lived sensation?
Cup Noodle unveils first-ever cold-water instant ramen in Japan
Starbucks Japan releases new Discovery Series collection celebrating local regions and traditions
Teen girl in Japan refuses to be victim, personally escorts train pervert to police for arrest
Japanese government ID card and app to be required for certain Pokémon card purchases next month
Is Japan’s tourism boom slowing down? Foreign visitor numbers fall for first time in five years
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Family Mart opens new “Famima” flagship store in Tokyo that’s like a tourist attraction
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
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
We ate sushi made from Japan’s most expensive tuna ever【Taste test】
Japanese people list their top ten fish, and tuna isn’t number one
Imitation fish sperm appears at 7-Eleven Japan【Taste test】
On our final visit to Tsukiji fish market, tuna merchant tells us his fears about its replacement
I can’t believe it’s not fish eggs? Taste-testing Japan’s imitation “almost ikura”【Photos】
Which Japanese conveyor belt sushi chain has the best tuna sushi?【Taste test】
A meatless beef bowl? We try a plant-based meal at Sukiya in Taiwan
CoCo Ichi hamburger steak curry for vegetarians? Taste-testing the meatless option in Taiwan
Does Ippudo’s new plant-based tonkotsu ramen really taste like pork?
Fresh tuna sashimi vs. frozen – Can our Japanese taste testers tell the difference in taste test?
Sushi-flavored potato chips?!? Could our world really be so beautiful? 【Taste test】
Why does this sushi restaurant serve raw tuna in an ice cream cone?【Taste test】
Eating Japan’s Mystery Eel, mysteriously, both is and isn’t like eating real eel【Taste test】
The good, the bad, and the ugly of a vending machine sushi meal in Tokyo【Taste test】
Living the fake high life with Beyond Tofu That’s Like Foie Gras【Taste test】