To begin, place a highball or Collins glass in your refrigerator, so that it is completely chilled by the time you are ready to pour in your drink and serve it. This will add to the refreshing nature of the drink.
While the glass is chilling in the refrigerator, take a cocktail mixing glass (make sure it is clean and does not contain the remnants of past drinks) and fill a little less than half of it with crushed ice or ice cubes.
Now, start preparing the Moscow Mule. Pour 1 ¾ oz of vodka into the cocktail mixing glass – there are no stringent rules about this, and any brand of good vodka will do, as long as it is pure and unflavoured. Give it a slight stir, so the ice and the vodka mix together.
Next, pour ½ oz of lime juice into the vodka mixture, and give it another stir, to make sure all these ingredients are thoroughly mixed. Now, take the highball or Collins glass out of your refrigerator, and pour the mixture into it. Top the vodka and lime juice mixture with ginger beer.
Your Moscow Mule is now ready to serve. Garnish the cocktail with a fresh lime wedge, float a couple of mint leaves on top, stick a stirring rod into the drink, and serve immediately.