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> It is also considered important to always finish an opened bottle of vodka, and not to leave any undrunk. Duh professor, excuse my french, I do think it's BS

• sandebert 5y ago
  In 1997 I met a Russian student studying in Sweden. Over a break he went back to Russia, and when he returned to Sweden he had brought a typical (he claimed it was) Russian vodka bottle. It was a one-litre bottle, and it had a pull-off bottle cap. When I asked about it, he explained that it didn't need anything else because the bottles never needed to be sealed after being opened. https://en.wikipedia.org/wiki/Pull-off_bottle_cap https://en.wikipedia.org/wiki/Pull-off_bottle_cap