Burger King's "Flame-Grilled Fragrance" is a limited-edition cologne or perfume that the fast-food chain introduced as a promotional and marketing stunt. It was launched as part of a humorous and attention-grabbing campaign in Japan in April 2015. Here's an explanation of Burger King's "Flame-Grilled Fragrance" cologne:

1. Marketing Stunt: Burger King Japan created the "Flame-Grilled Fragrance" as a tongue-in-cheek marketing stunt to generate buzz and media attention. The idea was to playfully embrace the aroma of their signature flame-grilled burgers.

2. Unique Scent: The fragrance was designed to capture the smell of Burger King's flame-grilled burgers, complete with the scent of charbroiled beef and spices. It aimed to replicate the experience of walking into a Burger King restaurant.

3. Limited Edition: The "Flame-Grilled Fragrance" was not intended for widespread commercial sale. Instead, it was offered in limited quantities as part of a promotional campaign.

4. April Fools' Day: The launch of the fragrance coincided with April Fools' Day, adding an element of humor to the campaign. While it was a real product, its release on this day played into the playful and unconventional nature of the promotion.

5. Collectible Item: The fragrance came in a sleek, black bottle with a design reminiscent of a high-end cologne. It was positioned as a collectible item rather than a serious fragrance.

6. Online Promotion: Burger King Japan promoted the "Flame-Grilled Fragrance" through its social media channels and website, allowing interested consumers to enter a contest to win a bottle of the fragrance.

7. Consumer Engagement: The campaign encouraged consumer engagement and participation. It played on the idea that some people might find the smell of flame-grilled burgers enticing and wanted to carry that aroma with them.

8. Limited Duration: As a promotional stunt, the "Flame-Grilled Fragrance" was only available for a limited time, adding a sense of urgency and exclusivity to the campaign.

In summary, Burger King's "Flame-Grilled Fragrance" cologne was a playful and attention-grabbing marketing stunt that aimed to celebrate the distinctive aroma of its flame-grilled burgers. While it wasn't a serious fragrance product, it generated significant media attention and engaged consumers through its humorous and unique concept.