
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
The fish in rural Fukui that rivals Japan’s most auspicious sea bream
Which convenience store onigiri rice balls are the most popular? Survey reveals surprising results
Japanese restaurant chain serves Dragon Ball donuts and Senzu Beans this spring
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 1]
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 2]
Japan has only one airport named after a samurai, so let’s check out Kochi Ryoma【Photos】
New sushi train toy makes sushi for you, then delivers it, and is exactly what we want【Video】
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Sakura Totoro is here to get spring started early with adorable pouches and plushies
This Japanese restaurant chain’s triple-decker sushi bowls are a crazy feast for the eyes/stomach
Highest Starbucks in Japan set to open this spring in the Tokyo sky
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Tokyo Skytree turns pink for the cherry blossom season
Yakuzen ramen restaurant in Tokyo is very different to a yakuza ramen restaurant
Shibuya Station’s Hachiko Gate and Yamanote Line stairway locations change next month
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Starbucks Japan adds new sakura Frappuccino and cherry blossom drinks to the menu
Japan’s new “Cunte” contact lenses aren’t pronounced like you’re probably thinking they are
Japan’s newest Shinkansen has no seats…or passengers [Video]
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Foreign tourists in Japan will get free Shinkansen tickets to promote regional tourism
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Is China’s don’t-go-to-Japan warning affecting the lines at a popular Tokyo gyukatsu restaurant?
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
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
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 giving away specialty bottlecaps in Vietnam to promote reusing their plastic bottles