On Monday, Burger King was sued by a vegan customer who accused the fast-food chain of contaminating the meatless "Impossible" Whoppers by cooking them on the same grills as the traditional meat burgers.
In a proposed class action, Phillip Williams said he bought an Impossible Whopper, a plant-based alternative to Burger King & # 39; s regular Whopper, at a run-through in Atlanta, and would not have paid a premium price had he known that cooking would let it be "coated in meat by-products." cooked on the same grills.
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Burger King, a unit of Toronto-based Restaurant Brands International Inc, declined to comment, saying it did not discuss pending litigation.
The site describes Impossible Burger as "100% Whopper, 0% Beef," and adds that "for guests looking for a meat-free alternative, a non-slaughter method of cooking is available on request."
Williams' attorney did not immediately respond to a request for comment on the disclaimer or available preparation options.
Impossible Foods Inc, which helped create Impossible Whopper, has said that it designed the product for meat eaters who want to consume less animal protein, not for vegans or vegetarians.  "For people who are strictly vegan, there is a microprocessing procedure that they are welcome to request in any store," said Dana Worth, Sales Manager for Impossible Foods, in a recent interview.
Burger King began selling Impossible Whopp in August.
Restaurant Brands also owns Canadian coffee and restaurant chain Tim Hortons, and is overseen by Brazilian private equity firm 3G Capital.