Also not strictly tea (it's in the holly family), this caffeinated elixir was discovered by Paraguay's Guarani Indians as a digestive aid and morning brew before it caught on abroad.
Credit: James McQuillan / Getty Images
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
The Interpreters We Left Behind
The Rise of Cyclocross
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