Moscow Mule (and I'm not talking about the shoes).
There are untold variations of the Moscow Mule. Try this one for size.
30ml vodka, 30ml lime juice, 90ml ginger beer and Ice. Throw the ice into tall glass, pour in the rest and muddle it all up. Bob's your uncle.
How cool are the tin mugs below? I have no idea where to get those but I like them a lot.
So to go with the Moscow Mule you need to have some Blini. This is basically baby pancakes, some caviar dumped on top with a dollop of sour cream. If your Russian friends have cleaned you out of caviar you can use fish or trout roe. All goes down the same way. Yumo.