What alcoholic drink in Russia is called Northern lights? Why?

There are two versions of "Northern lights." Vodka with champagne and, for residents of the far North alcohol of champagne. Ever tasted (in the ratio of 7030) - awesome powers thing. In connection with it (a cocktail) invented the game "Bear is coming". After the adoption of the next portion of the command is the Bear is coming! And all hiding under the table. The bear is gone! And all come out from under the table. Well, not everything.
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