7. Japan

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When we think of partying in Japan we might think of things like sake or perhaps rice wine. Both of those can surely lead to a nasty hangover if overdone, but the Japanese have their own home remedy. The umeboshi is actually a pickled and dried ume, which is not unlike an apricot or plum. It is said to be extraordinarily bitter and tends to have a high salt content, which could actually help a hangover by helping to restore depleted electrolyte levels that often result from too much drinking.