In this Buyer's Desk Backstock episode, we're running back our conversation with Tero Isokauppila, Co-Founder of Four Sigmatic Coffee.

Hear from Tero about how Four Sigmatic helped to establish a thriving functional mushroom market and the vital role that mushrooms play in cultures across the world.

Plus, learn more about his book, "Santa Sold Shrooms," a children's book about the indigenous Sami origins of Santa Claus.