Increasing concern over cows and climate change—raising cattle takes lots of energy, and their digestion emits greenhouse gases—has helped make Beyond Meat one of the faster-growing U.S. food companies; its plant-based proteins dot grocery cases and menus at KFC, Dunkin’ and Pizza Hut. Now it’s expanding even more: in February, the 12-year-old company signed a three-year deal to become the preferred provider for the McPlant line at McDonald’s. “The mainstreaming of our products is incredibly important” for the planet, says CEO Ethan Brown. Plant-based steak and bacon are the “holy-grail items,” he says.