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In Mongolia, hangover relief is in the eye of the beholder--if you happen to hang out with livestock. Pop a pickled sheep's eyeball in some tomato juice, swirl and gulp. Whatever you do, don't chew! (Don't worry, folks--the eye above is fake!)

Mexico's go-to hair of the dog is a michelada, a frosty mug of beer typically spiked with tomato juice, worcestershire sauce, lime and a kick of spicy heat.

Waking up wrecked in Poland can make you quite the sourpuss: Among the most trusted local hangover cures is pickle juice. Straight up.