
Ever wondered what it would be like to shove your mouth into a three-gallon mound of glistening, wobbly jelly? We’ve got all the crazy photos after the break!
Ever since our Japanese team bought a giant novelty Starbucks mug last year for a whopping 86,400 yen (US$700), they’ve been coming up with creative uses for it, proving its worth as a gag product and as a handy cooking tool in the RocketKitchen. Now it’s time to whip out the giant 20-pound beast for another RocketNews24 food event, this time in honour of Jelly Day in Japan, July 14.
▼ The beer can below helps to give you an idea of the size of the giant coffee mug.
With July 14 sounding similar to the word “gelatin”, the date has been promoted as “Jelly Day” by the Gelatin Manufacturers Association of Japan. To celebrate, our Japanese reporter P.K. Sanjun led the team in a jelly-making event of giant proportions, starting the night before by setting the dessert in the oversized mug, using twelve bags of jelly in four different flavours.
▼ With a kettle and two pots on the boil at the same time, it took P.K. about two hours to mix 12 litres (3 gallons) of boiled water into the mug with the jelly crystals.

▼ Then it was time to cover the mug with plastic wrap and place it in the fridge overnight to set.
By the time P.K. arrived at the office the next morning to check on his masterpiece, it looked like it had set with a nice glossy coating on the surface.
But the truth would be revealed with the ceremonial serving of the jelly, which would be poured out of the mug and onto the plastic-covered table.
Had the jelly solidified inside? Or would it be a huge runny mess that would trickle over the sides of the table and onto the floor?
Everyone held their breath as P.K. gently tipped the contents of the mug out onto the table.
▼ There she goes!
The look of awe on the faces of P.K. and Mr Sato say it all! Jelly Day had truly arrived in the office with the glorious centrepiece looking far more beautiful than any of them had ever imagined!
▼ The gorgeous concoction deserved some manga-fication to emphasis its true greatness.
The only thing left to do now was taste. Mr Sato happily led the way by latching his lips onto one side, slurping the wobbly, fruity goodness into his giant gob.
Yoshio went for a more seductive tongue-licking approach, happy to enjoy the texture of the smooth, cool jelly on his taste buds.
To see everyone digging into the dessert like wild animals around a carcass, take a look at the video below. Happy Jelly Day everyone!
Images ©RocketNews24
[ Read in Japanese ]


















Giant, house-sized Starbucks Mug appears in Tokyo, so Mr. Sato grabs own huge mug to check it out
What do you do with a very large novelty Starbucks mug? Make a very large dessert!
What happens when you walk into a Tokyo Starbucks dressed as a giant teddy bear? 【Video】
RocketKitchen makes a giant Hi-Chew candy from over 1,400 Hi-Chew pieces!
How to make Starbucks Japan’s American Cherry Pie Frappuccino even better
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Starbucks Japan releases new limited-edition summer drinks…and a pastry for dunking
Lawson upsizes convenience store food for a limited time with two must-try Japanese meals
Japanese bento shop touches hearts by selling super cheap boxed lunches for around a dollar
Family Mart’s new Gyoza Dog proves Japanese convenience store food hits different
New research reveals that the key to efficient memorization may be in exhaling
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
Japan’s Pokémon Slowpoke Train goes on hiatus, but a mini version could be yours to own
Sizzling on a hot plate?! American sushi rolls break all the rules at this Japanese restaurant
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Universal Studios Japan is giving Frieren anime fans the chance to make unforgettable memories.
East Japan Railway announces plans to abolish magnetic-strip tickets
Tokyo’s life-size Gundam is getting a new look before its end-of-summer removal
Japan’s cheap beef bowl chain goes upscale with Matsuya Premium, but is it worth the higher price?
7-Eleven Japan joins the craze for Korean Gamja Cheese Balls
7-Eleven Japan has a new Creamy Iced Cafe Latte that’s a hit on social media
Uniqlo reveals third round of massive 100-year-anniversary manga T-shirts for Jump’s Shueisha
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
New official Ghibli anime food cookbook will teach you how to make Ponyo’s ramen and more
Japanese convenience store Lawson launches new “mini supermarket” chain, L Minimart
Japan’s real-world Pokémon hot spring’s first photos are here![Photos]
Kanji ice cream becomes a sell-out hit in Japan
Kyoto public junior high school becomes first in Japan with a hoodie school uniform
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】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Rice ball melon bread – A treat Japanese bakeries aren’t crazy enough to make, but we are【SoraKitchen】