
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
Injuries on stairs in Tokyo highlight an overlooked design flaw
Japan’s popular bead bonsai kit is as beautiful as it is gruelling to make
Japan has new rules for bicycle riders, and these 14 things could get you a fine or a court date
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Better know a train nerd: 36 different classifications for Japan’s “densha otaku”
Final version of Sanrio: Beginning of Kawaii exhibition opens in Tokyo[Photos]
Japanese trains in Sapporo might be better than those in Tokyo, thanks to one special feature
The results are in! One Piece World Top 100 characters chosen in global poll
The 6 best frozen foods at a Japanese grocery store
Manga/anime creator Kenya Suzuki arrested for importing child pornography from Europe
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Mt. Fuji decorated with a 500,000-flower pink carpet is Japan’s ultimate spring view
Lawson convenience store at popular tourist site is one of the most unusual in Japan
30 Pikachus want to share a Tokyo hotel room with you that has separate Grass, Water, Fire spaces
Japanese government wants overseas anime market to roughly triple in 10 years, but are they crazy?
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japanese bento shop sells croquettes for 13 cents, but are they any good?
Starbucks Japan releases FIVE new Frappuccinos in a day, and we try them all in 90 minutes
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
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
Rice ball melon bread – A treat Japanese bakeries aren’t crazy enough to make, but we are【SoraKitchen】