
The OKO is an “advanced filtration water bottle” that features a filtration system developed by NASA. It’s so powerful that the makers claim it can filter cola into transparent, colorless liquid. The original promotional video is pretty convincing, but there were plenty of people on the internet crying foul. How can this mere water bottle turn dark brown cola into what appears to be water?
We here at RocketNews24 knew what we had to do: go on a quest for this magical bottle and try it out ourselves. Ladies and gentlemen, we have indeed succeeded in turning cola into transparent, colorless liquid. It looked good enough to drink, but as we held the liquid to our quivering lips, we could only image what it might taste like.
Let’s rewind and start from the beginning. Here’s a retelling of our reporter’s dabble in sorcery:
I hurriedly ordered an OKO water bottle from the internet. The wait for it to be delivered was excruciating. When it finally came, I followed the instructions and first filtered an entire bottle’s worth of water. I anxiously watched as the last drop of water turned into…better water.
Then it was on to the main event. I eagerly poured cola into the bottle, screwed on the cap, inverted the entire container, and…IT’S CLEAR!!! The bottle actually turned cola into water! Or so I thought.
The first streams of liquid were completely colorless, but became tinged with brown as I continued to pour. I was a little disappointed that it wasn’t completely colorless, but pressed on.
It was finally time to taste the magical concoction. I took a sip and was again disappointed to find that it wasn’t tasteless. It actually just tasted like sugar water. It was also no longer carbonated, but there was a lingering hint of cola. The filtered cola definitely didn’t taste bad, but that’s some pretty expensive muddy sugar water. Filtered Pepsi and Dr. Pepper yielded the same results.
So in conclusion, the OKO water bottle is able to filter cola into a nearly colorless liquid that tastes like sugar water. We’re guessing the OKO can filter other dark liquids into diluted versions… maybe soy sauce can be reduced to semi-clear, salty liquid. Hmm…
Stay tuned for an update!
Photo&Movie:Rocketnews24

[ Read in Japanese ]














High-Tech Water Bottle Turns Cola into Colorless Liquid 【Video】
Lucky winner of Coca-Cola Japan’s transparent cola campaign stunned by what he received in mail
Are transparent drinks actually revealing “Japan’s dark side?”
We go to bed with Coca-Cola’s new Sleep Water to test its snooze-inducing effects
Coca-Cola Japan releases new clear coke this month, we get to try it before it goes on sale
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Starbucks Japan releases FIVE new Frappuccinos in a day, and we try them all in 90 minutes
Japanese trains in Sapporo might be better than those in Tokyo, thanks to one special feature
Lawson convenience store at popular tourist site is one of the most unusual in Japan
Fading Tokyo – Horikiri Station, the Arakawa River, and Kinpachi-sensei[Walking course]
Godzilla turns fuzzy for his 60th birthday with adorable results, we stop by to say hi
30 Pikachus want to share a Tokyo hotel room with you that has separate Grass, Water, Fire spaces
Downtown Tokyo’s meaty monster Kaibutsu ramen will challenge your stomach, thrill your taste buds
The Japan Poop Society is making movements to protect people’s health
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Mt. Fuji decorated with a 500,000-flower pink carpet is Japan’s ultimate spring view
You can assemble a well-balanced team of Pokémon, them eat them, thanks to Japanese cake chain
Man bites woman at cherry blossom park in Japan, dies shortly after
7-Eleven Japan’s new baked-in-store sweet treat is only available in three parts of the country
Starbucks Japan closing only Shinkansen platform branch for popularity-triggered renovations
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Japan now has a special desk for people who work at home with a pet cat[Photos]
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Uniqlo announces new T-shirts for One Piece, Naruto and more for manga publisher’s 100th birthday
Train station platform ramen store closes its doors on half a century of history in Tokyo
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Krispy Kreme releases Super Mario doughnuts in Japan for a limited time
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
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
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
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
Transparent coffee! We taste-test Asahi’s Clear Latte, marvel at Japanese drinks wizardry
Cola made from the island that inspired Princess Mononoke begins crowdfunding
Japan gets a taste of Coca Cola Orange
From Pool to Glass in One Hour: Smart Gadget Provides Clean Drinking Water in an Emergency
We try unagi cola with genuine eel extract 【Taste Test】
We make eco-friendly instant noodles from the water in Tokyo Bay
Is Coca-Cola Japan’s new canned Jack Daniels cocktail better than mixing your own?【Taste test】
What happens if you make instant noodles with Coca-Cola instead of water?
Is Coca-Cola Japan’s brand-new strawberry Coke any good?【Taste test】
Transparent soy sauce is a thing — we saw it, we tried it, we’re confused by it
Bleach Coca-Cola is on sale in Japan and won’t kill you, but how does it taste?【Taste test】
Coca-Cola’s new limited-edition Japan travel destination bottles highlight history and culture
Coca-Cola’s Lemondo canned cocktail gets a limited edition upgrade–and we got to try it first!
【Cool find!】Special edition Coca Cola made with Okinawan water
There’s a Camel that Drinks Coca-Cola? RocketNews24 is There!
Coca-Cola Japan changes recipe for best-seller matcha latte, but is it worth a sip?【Taste test】