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Burger King unveils Whopper from cows on green diet

Burger King has unveiled a new low-methane diet for its cows in a move towards sustainability and to tackle climate change
Burger King has unveiled a new low-methane diet for its cows in a move towards sustainability and to tackle climate change Paul J. RICHARDS AFP/File
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New York (AFP)

For those seeking to tackle climate change and get a fast food fix, Burger King has the answer -- a Whopper from cows that fart and burp less.

The fast-food giant announced Tuesday that select restaurants in five US cities -- New York, Miami, Portland, Los Angeles and Austin, Texas -- would be serving Whoppers made from "reduced methane emissions" beef.

The chain says that adding just 100 grams of lemongrass leaves to a cow's diet late in life could reduce their output of methane, a greenhouse gas responsible for global warming.

Initial study results revealed an up to 33 percent reduction in methane emissions from cows on the new diet in the last three to four months of their lives, Burger King said.

"At Burger King, we believe that delicious, affordable, and convenient meals can also be sustainable," said global chief marketing officer Fernando Machado.

But the company, which worked with two scientists on the project, said it hopes to inspire other groups to make similar moves by making their findings public.

"If the whole industry, from farmers, meat suppliers, and other brands join us, we can increase scale and collectively help reduce methane emissions that affect climate change," Machado said.

Burger King had already moved to respond to changing tastes of environmentally conscious customers who limit their meat intake by offering a vegetarian Whopper last year.

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