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The Tea Drawer journal

Inside the Drawer

Brewing notes, new research and stories from the drawer, all about North America's native tea.

Snow-covered holly branches with bright red berries in winter, the holly family that includes caffeinated Yaupon

Latest

Yaupon vs. Yerba Mate vs. Guayusa: Meet the Three Caffeinated Hollies

Yaupon, yerba mate and guayusa are all hollies with natural caffeine! Here's how the three cousins compare in caffeine, flavor and history.

caffeineNovember 9, 2026

caffeine · October 26, 2026
Green vs. Roasted Yaupon: What Roasting Really Changes (and What It Doesn't)
Does roasting Yaupon lower its caffeine? New University of Georgia research has answers. Here's how green...
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