TED-Ed
What are truffles, and why are they so expensive? - Carolyn Beans
2025 • E73 Sep 9, 2025 6m
Truffles are one of the world’s most expensive foods— in part because global demand often outstrips supply. And truffles are becoming even more rare and more expensive as deforestation and climate change shrink their suitable terrain. But why are these fungi so rare? And why don’t we just farm more of them? Carolyn Beans digs into the truffle’s unique and somewhat mysterious biology.