The Moldy Whopper

The beauty of
no artificial
preservatives.

The removal of 8,500 tons of artificial preservatives Globally is the equivalent of 38 Statues of Liberty per year. In most of Europe, big areas in the US and particularly in Sweden, BK has removed all artificial preservatives from its products. The brief was to tell this to the world. But since being much smaller than main competitor McDonalds and therefor having a lot less to spend on marketing, Burger King need to be smarter with every dollar they spend. BK broke the mold with something unpredictable: mold.

The Business Problem

Burger King made one of the biggest product changes in its history. But how to make people believing us again?

Fast food is full of claims. Fresher. Better. Natural. No one believes them anymore. We needed a way to turn a product truth into undeniable proof.

Product Change
Removed artificial preservatives from the Whopper
Trust Problem
No one believes fast food claims
Proof Idea
Let the Whopper get moldy in front of the world
The Strategic Unlock

The mold was not the problem.
The mold was the proof.

Instead of showing a perfect burger, we showed what time does to real food.

The Moldy Whopper turned a product reformulation into a brand act.

It moved Burger King from advertising food to demonstrating food quality.

It gave the brand a visual language that is impossible to own and impossible to ignore.

The Campaign Mechanic

34 days.
Zero artificial preservatives.
Total transparency.

Day 1
Day 14
Day 28
Day 34
The Business Impact

It didn't just get attention. It changed perception and grew the business.

+14%
Sales
increase
+88%
Positive
brand sentiment
+26%
Perception of high-quality ingredients
+48%
Awareness of removal of artificial preservatives
Cultural Impact

A global conversation about real food.

From talk shows to news, from social media to the world's biggest publications. The Moldy Whopper became a cultural moment.

8.4B
Impressions
$40M
Earned media value
Press coverage: Thrillist, CNN, The New York Times, TIME, Fast Company, Bloomberg and dozens of other outlets surrounding the Moldy Whopper
Awards & Recognition

The world's most awarded campaign in ad's history.

Cannes Lions
Cannes Lions
X3 GRAND PRIX
D&AD
D&AD
BLACK PENCIL X5 YELLOW PENCIL X4 GRAPHITE PENCIL WOOD PENCIL
The One Show
The One Show
X5 BEST IN SHOW 18X GOLD
Clio Awards
Clio Awards
4X GRAND PRIX 12X GOLD
Effie / WARC
Effie / WARC
#1 Most awarded
WARC Creative 100

Real food does not stay perfect forever.
Neither should food advertising.

The Moldy Whopper proved that radical transparency can build trust, change perceptions and grow sales.

A moldy burger became one of the clearest demonstrations of product quality in modern advertising.

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