Scientists developed a leather-like material made from mushroom mycelium by treating it with chemical cross-linkers similar to those used in traditional leather tanning. The best results came from using glutaraldehyde, which chemically bonded to the mycelium’s proteins and carbohydrates, creating a stronger and more durable material. While the mycelium leather now has comparable strength to conventional leather, it needs to be more flexible. This research offers a more environmentally sustainable alternative to animal leather.