About Four Sigmatic
Four Sigmatic believes feeling more focused, calm, and energized shouldn’t be complicated. Founded in 2012 by Tero Isokauppila, the brand was born on his family’s 13th-generation Finnish farm, where Tero grew up foraging wild mushrooms and drinking coffee, a Finnish ritual as old as the land itself. Inspired by Finland’s resourceful use of mushrooms as a coffee substitute during WWII, Tero set out to combine the two into something entirely new: the Original Mushroom Coffee.
Today, that idea has grown into a movement. Four Sigmatic has served over 400 million cups of mushroom coffee to people looking for steady energy, sharper focus, and a calmer day — without the jitters or crash of regular coffee. Every product starts with real mushroom fruiting bodies, not fillers or mycelium, and is extracted, organic, and third-party quality tested.
That commitment has made Four Sigmatic the #1 mushroom coffee brand (Spins Scan NPI Natural Channel L52 ending 2.22.2026). Whether you’re starting your morning or resetting your afternoon, Four Sigmatic makes feeling your best part of the everyday one cup, one mushroom, one ritual at a time