A vegan customer is suing Burger King for cooking its plant-based patties on the same grills it uses for meat. In a proposed class action filed in the US, Philip Williams said the way the Impossible Whopper is grilled leaves it "coated in meat by-products". He said the burger's tagline - "100% Whopper, 0% Beef" - was misleading. READ MORE : https://www.bbc.com/news/world-us-canada-50486664