Burger King has been banned from showing adverts suggesting its Rebel Whopper, which is cooked alongside meat and contains egg, is vegan-friendly.
The Advertising Standards Authority (ASA) said the chain’s claim that the burger is “100% Whopper, no beef” could be understood to mean it did not contain animal products.
Burger King said it had been “clear and transparent” in its marketing.
The Vegan Society said it was a “missed opportunity.”
“We communicated from the outset that the Rebel Whopper is aimed at a flexitarian audience,” the fast food chain said in a statement.
But the ASA found that Burger King’s social media posts about the Rebel Whopper gave the impression it could be eaten by vegans and vegetarians.
The posts included a logo saying “Vegetarian Butcher”.
“The green colour palette and the timing of the ad and product release to coincide with ‘Veganuary’ contributed further to the impression that the product was suitable for vegans and vegetarians,” the ASA said.
Some of the adverts included small print saying “cooked alongside meat products”.
But the ASA said: “We considered it was not sufficiently prominent to override the overall impression that the burger was suitable for vegetarians and vegans.”
When the burger was launched, the fast food chain said it was aimed at those who want to reduce their meat consumption.
But a spokesperson for the Vegan Society called the launch a “missed opportunity”.
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Burger King told the ASA that it had been “clearly communicated” on social media and to journalists that the burger may not be suitable for vegetarians or vegans.
It also said that it had not included the “Vegetarian Butcher” logo in TV adverts because it was considered “potentially misleading”.
“Burger King explained that the product itself consisted of a 100% plant-based patty supplied by the Vegetarian Butcher and had no beef,” the ASA said.
“They added that a customer who did not want mayonnaise could have excluded that from their order.”