BK Japan Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President & CEO: Kazuhiro Nomura), operator of Burger King® in Japan, will launch the massive cheeseburger ‘Dirty The One Pounder‘ on Friday, August 7, 2026 for a limited time and in limited quantities. Stacked with four flame-grilled 100% beef patties, it weighs in at a staggering 527g with a total of 1,656kcal. As the third installment of the 2026 “One Pounder Series,” it truly earns its title as the ultimate “Dirty” burger.
Four Flame-Grilled Patties Meet Four Slices of Cheddar
Burger King® developed the “One Pounder Series” — built around four beef patties — so guests can fully savor the smoky, juicy character of flame-grilled 100% beef. The new ‘Dirty The One Pounder’ layers those four patties with four slices of rich cheddar cheese, plus pickles and onions for a sharp counterpoint. Beef and cheese alternate in generous strata, delivering charred aroma and creamy depth in every bite. At a total weight of 527g, it is a must-try for anyone who loves an oversized burger.
Bold “Special Garlic Mayo Sauce” — Layered Twice
The true star is the newly developed “Special Garlic Mayo Sauce.” Built on a creamy mayo base, it combines garlic paste and garlic powder for a punchy savory kick, accented by the gentle heat of black pepper. In ‘Dirty The One Pounder,’ this sauce is applied in a lavish double layer. With every bite, smoky beef and overflowing sauce come rushing out — a bold, unapologetically indulgent experience worthy of the “Dirty” name.
Product Details
- Product Name: Dirty The One Pounder
- Launch Date: Friday, August 7, 2026 (limited time, limited quantity)
- Price: 2,490 yen (single) / 2,790 yen (set), tax included
- Set Includes: French Fries (S) + Drink (M)
- Total Calories: 1,656kcal (standard value based on formulation)
- Total Weight: 527g (varies by individual item)
Launch Bonus: Original Sticker
To celebrate the launch, customers who purchase ‘Dirty The One Pounder’ will receive an “Original Sticker” while supplies last. One sticker is given per burger purchased, whether ordered as a single item or as a set. Quantities are limited and the giveaway ends once stock runs out. Advance reservations are not accepted, so early visits are recommended.
Recommended: Ask for a “Half Cut”
To make this 527g giant easier to enjoy, Burger King® recommends the “Half Cut” option. Simply say “half cut” at the register and staff will slice the burger in two. It becomes far easier to hold, and you get to start eating from the juiciest center — perfect for sharing as well.
“Big Mouth Dirty” Lineup Still Available
The following two items, launched on Friday, July 3, 2026, remain on sale:
- Double Beef & Hash Big Mouth Dirty: 1,490 yen (single) / 1,790 yen (set)
- Beef & Chicken Big Mouth Dirty: 1,490 yen (single) / 1,790 yen (set)
Notes and Non-Participating Locations
At stores offering breakfast service, sales begin after 10:30. As a limited-quantity item, sales end once stock is sold out; some stores do not carry the product, and sales hours vary by location. The following three stores do not sell ‘Dirty The One Pounder’ or the two “Big Mouth Dirty” items:
- Burger King® Tokyo Racecourse (Fuchu City, Tokyo)
- Burger King® Kyoto Racecourse (Fushimi-ku, Kyoto City)
- Burger King® Kansai International Airport Terminal 1 (Izumisano City, Osaka)
About Burger King®
Founded in 1954, the Burger King® brand operates more than 19,000 restaurants across over 120 countries and the United States, making it the world’s second-largest quick service hamburger chain by store count. In Japan, BK Japan Co., Ltd. holds full authority over domestic marketing and restaurant operations, including menu development and store development. This summer, come experience the overwhelming satisfaction of four flame-grilled beef patties.