Early adopters like Stella McCartney are pitching sustainability and innovation in swapping cowhides for mushroom roots. In a warehouse outside Oakland, California, the air smells like decaying trees. Workers toss microorganisms onto sawdust to grow mushroom roots into a leathery material.
https://www.bloomberg.com/news/features/2022-07-25/can-luxury-brands-sell-you-on-mushroom-leather