
We’ve never been ones to shy away from fast food challenges, and today is no exception. Today may well be Friday to the rest of you, but for the RocketNews24 team, and especially our champion eating machine Mr. Sato, today was and will forever remain the day that we took on the challenge of the 100 slice onion tower.
From the people who brought you the 1,000 cheese slice whopper and the 1,050 rasher bacon burger, we proudly present: The Onion Tower Challenge.
Just like in the west, Burger King in Japan is always happy to prepare burgers exactly as the customer wants it, adding and taking away whatever ingredients he or she desires. Starting today, however, Burger King Japan launched its “Bakudan Oniteri“, or “onion bomb”, campaign. Featuring a burger with five chunky slices of grilled onion drizzled with sweet and sticky teriyaki sauce, the Bakuoni burger should be more than enough for any man. Mr. Sato, however, is not just “any man.”
- In the Red Corner:
Mr. Sato
Worthy opponent in the 1,000 slice cheeseburger challenge, the 1,050 bacon rasher melee, and the current staff record holder for speed eating at Go! Go! Curry. He’s here, he’s ready, and you’d better believe he’s hungry.
- In the Blue Corner
This monstrosity

The Burger King Bakuoni, a traditional flame-grilled Burger King burger, topped off with five thick slices of grilled onion and slathered with teriyaki sauce, amounting to 935 kilocalories of pure hamburger goodness. To this, we added an additional 95 slices of onion to make a nice, round number and give our man a challenge worthy of him. With each slice clocking in at 18.5 kilocalories, would-be champions must work their way through a grand total of 2,692.5 kilocalories in just one burger. But when it’s mostly vegetables, it’s all perfectly healthy, right!?
With Mr. Sato warmed up and ready to roll, we prepared our cameras and settled in with our laptops, ready to document the event. This wasn’t going to be pretty, but we were prepared to stick by our man until the bitter end. Here’s how it went down.

– Catch me if you can!
Mr. Sato eyed the gargantuan package set before him. With the outer wrapped removed, the air in the office was immediately filled with the sweet, sickly aroma of grilled onions, and just the slightest hint of beef and teriyaki sauce. The kind Burger King staff took extra care to reinforce the tower in an additional layer of plastic to ensure that the burger kept its shape during transit, which, unbelievably, it did. The wrapper was, however, absolutely dripping with moisture thanks to the sheer amount of steaming hot onion inside.
Two words of warning to anyone who’s considering taking on this challenge at home: 1. Don’t. 2. These things get slippery!
This thing would evidently have to be handled like a ticking bomb, but the additional moisture didn’t make getting into it any easier. With the help of a cutter and some scissors, Mr. Sato slowly, carefully, started to peel back the inner wrapper and reveal its contents.

– Sweet, sweet onion
Not wanting to waste another second, our man broke into the enormous stack and in the blink of an eye he was gone, lost in a world of calories, carbs and chunky, tangy onion. The thick rinds of glistening white onion entwined with the sweetness of the accompanying teriyaki sauce unbelievably well, soaking up every drop of it. Grilled to perfection, the outsides of the onions were ever so slightly charred while the insides were left firm but succulent, making every bite a crunchy, if slightly moist affair.
Despite the fact that he was essentially just eating entire fistfuls of onion and little else, Mr. Sato ate undeterred. Stopping only occasionally to add a little extra teriyaki sauce to help it all slide down easier, he devoured pound after pound of onion. Clearly he’d been practicing.

– An onion too far. But this is not the end
Despite his promising start, our reporter started to slow around half way through his Onion Tower Challenge. Minutes later, with two thirds of the tower demolished, Mr. Sato shook his head and called it. “It’s still fine to eat,” he assured us, “but I’m just so sick of the taste.”
We have to admit, at that moment we felt a slight pang of sadness. It was like seeing Mr. Miyagi from The Karate Kid slip and put his back out while teaching us how to do a roundhouse kick. What had happened to our unconquerable eating machine? Was this the first sign of his retirement from the world of fast food gluttony?
Fortunately, Mr. Sato still had something left in the tank. True to his word that it wasn’t the amount that lay before him so much as the sheer monotony of consuming the same mouthful over and over, our man grabbed a saucepan and a portable stove. Throwing the onions in and adding a little water, he softened them up just enough to go perfectly with a nice big gyudon beef bowl.
I’ve said it before and I’ll say it again: Mr. Sato, you, sir, are a machine.

If any of you happen to see this man tomorrow, we recommend keeping him at a distance of at least 10 feet. All that onion is going to take a while to get through his system.
We’ll leave you now with a video we shot of the entire onion adventure. We hope you’ve already eaten because this isn’t especially pretty.
http://www.youtube.com/watch?v=hjrjQ6zlW6I&feature=player_embedded
[ Read in Japanese ]

























All-you-can-eat Burger King is coming to Japan with a monster burger on board
Burger King unleashes the Tokyo Teriyaki Tower in Japan
We eat all-you-can-eat monster burgers at Burger King
Burger King Japan’s Cheeseburger Gelände — exceptional in taste, size and… paper napkins?
This is what a Whopper with 1,005 slices of cheese looks like in today’s financial climate
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Is it rude to sing along at concerts in Japan? We ask a pro musician for his take
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Studio Ghibli releases new “komorebi” plush toys to brighten your days
Starbucks on a Shinkansen bullet train platform: 6 tips for using the automated store in Japan
Tokyo has a brand new Harry Potter shop with its own butterbeer bar – Let’s see what’s inside【Pics】
Does Japan’s “body fat-burning” bottled tea really work? Our 30-day investigation 【RocketScience】
Is the all-you-can-eat KFC buffet in Tokyo really as good as they say it is?
Discover some of the best snacks in Atami, a wonderland of Japanese street food
W.T.F. Japan: Top 5 ways to get rid of the annoying door-to-door NHK guy 【Weird Top Five】
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Starbucks Japan releases new zodiac chilled cup drink for 2026
Street Fighter Hadouken Churros to be launched and eaten in Tokyo, Okami pudding on offer too
Is this the most relaxing Starbucks in Japan?
Large amount of supposed human organs left in Osaka marketplace
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Japanese train company is letting fans buy its actual ticket gates for their homes
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Is China’s don’t-go-to-Japan warning affecting tourist crowds in Tokyo’s Asakusa neighborhood?
Nintendo’s Kirby now delivering orders at Kura Sushi restaurants, but not in Japan
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s deadliest food claims more victims, but why do people keep eating it for New Year’s?
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】
The top 10 annoying foreign tourist behaviors on trains, as chosen by Japanese people【Survey】
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
Combining two of Burger King’s one-pound beef burgers for an extreme fast food challenge
This is What a Whopper With 1000 Slices of Cheese Looks Like
Burger King’s new Tokyo Teriyaki Tower is Japan’s newest meat wall【Taste test】
Lotteria’s Burger with Everything on It takes us on an emotional roller coaster 【Taste test】
Burger King releases the King Yeti on Japan
We do battle with the King Yeti from Burger King Japan
Burger King Japan Offering 15 Bacon Strips for $1 So We Order Whopper With 105 Bacon Strips
Mr. Sato celebrates Japan’s Good Meat Day by taking on Burger King’s all-you-can-eat Whopper deal
Our Gluttonous Reporter Mr. Sato Devours a 65-Strawberry Parfait Tower!
We Order Whopper With 1050 Bacon Strips, Struggle to Level Comically Huge Burger
Lotteria Mega Ramen Burger Challenge: Mr Sato Takes on a Tower of Carb Power
Japan’s MOS Burger replaces hamburger buns with lettuce for limited “Natsumi” range
Burger King adds Clown Fries and craft buns soaked in butter to menu in Japan
Mr Sato’s Terrible, Horrible, No Good, Very Bad Day at Doo Wop Chicken Burger in Tokyo
Burger King Japan’s Great King Yeti is the latest evolution of One Pounders
Leave a Reply