Muddle blueberries and mint in shaker then add vodka and ginger beer.
Pour vodka and ginger beer into shaker, close and gently shake.
Squeeze lime juice into ice-filled glass and drop wedge in then strain drink from shaker. Cheers!
Notes
Moscow mules are traditionally served in a copper mug because the metal quickly takes on the icy temperature of the cocktail, giving the drink an extra-cool sensation!