Burger King is trialling an 'Impossible' vegan Whopper - with the company boasting it tastes just like meat.
Although the burger hasn't yet gone on sale in the UK, the fast food chain says it has been tested in 59 locations in Missouri, America.
Some speculated the vegan delight was a prank with the news being released so soon after April 1.
However, pictures of people buying the real thing were posted on social media from the US trial sites.
It's believed the burger will be added to their main menu if it continues to go down well with customers.
Woman horrified by 'bizarre FUNGUS' growing inside Burger King toilets
The customers who have been lucky enough to chow down on one already certainly seem keen.
It has has been described as the Whopper's "twin" by the burger's manufacturer, and contains 17g of protein and zero cholesterol.
The burger's likeness to real meat has been praised by some on social media.
One user commented: "It's actually really good. I would not be able to tell it wasn't really beef."
Another customer posted on social media: "Would do again."
The burger is being produced by environmentally-focused food manufacturer Impossible Foods.
Other ingredients in the patty include sunflower oil and heme, a plant-based ingredient that makes the burger "taste like meat", according to the company.
Burger King adds new "supercharged" Black Angus burger to menu
Impossible Foods' mission statement claims that "using animals to make meat is a prehistoric and destructive technology" and using meat-free alternatives is important for the environment.
It adds: "Animal agriculture occupies almost half the land on earth, consumes a quarter of our freshwater and destroys our ecosystems."
Bakery chain Greggs recently boosted its sales by introducing a vegan sausage roll to their range, with the company's CEO Roger Whiteside labelling the product a "revelation".
