Mark Schneider, the chief executive of the Swiss food giant Nestlé, gripped a bun-clad concoction that looked like a bacon cheeseburger but contained no actual bacon, cheese or beef. He took a bite. It was a faux-meat, dairy-free mouthful symbolising what may be the future of the food industry. It was also a manifestation of how big corporations like Nestlé are responding to increasingly intense pressure to help fight climate change.
Vegan burgers, Schneider said, are a response to rising consumer concern about the healthiness of red meat and to criticism that cattle farming is bad for the climate. “The reason

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