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World's Weirdest Wines

Slide 3 of 9

Birch Sap Wine

Each spring, the winemakers at Sav in Jämtland, Sweden, start their production process with a highly unexpected first step: They extract the sap from silver birch trees. Their peculiar sparkling wine follows a recipe that dates back to 1785.

Photos © Gunno Rask / Tommy Andersson.

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