
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
Visiting Japan’s Gyarados Pokémon park in the city with a special connection to Magikarp【Photos】
Bear meat noodles?!? Tokyo restaurant adds a new kind of niku soba to its menu【Taste test】
Massive manga collaboration bringing 100 years of Shueisha manga to Uniqlo T-shirts【Photos】
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We try an unusual buffet of dishes made from wild game at a roadside stop in Chiba
Majority of Japanese women in survey regret marrying their husband, but that’s only half the story
7 reasons why you should visit Aomori Prefecture
Chikura no Iwaya: Secret beach cave only appears for two hours a day, and here’s how to see it
“Denki Anma”: The Japanese traditional torment that you’ll be glad stays in Japan
Japanese vending machine serves up unique drinks at four Tokyo train stations
Starbucks Japan releases new Frappuccino and latte for Valentine’s Day
Totoro cream puffs and Catbus cookies are finally available in downtown Tokyo
Japan’s kid-friendly ski program is now selling Pikachu snowboards for a limited time only
Japanese women showing rebounding interest in giving Valentine’s Day chocolate【Survey】
McDonald’s Japan releases a Mushroom Mountain and Bamboo Shoot Village McFlurry
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
10 times to avoid traveling in Japan in 2026
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
Our 52-year-old pole dancing reporter shares his tips for achieving your New Year’s exercise goal
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
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
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
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】
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
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
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 Company releases new line of alcoholic drinks in Japan, and we’ve tried it
Coca-Cola Japan changes recipe for best-seller matcha latte, but is it worth a sip?【Taste test】
Leave a Reply