The Mojito seems to be "the" drink these days, but this drink dates from before the 1930's, where it was a popular drink in cuba to refresh and relax with. In the 1950's the drink burst onto the international scene when it was "discovered" by Enest Hemmingway at "La Bodeguita del Medio". Properly made, a mojito should always be made with fresh mint and fresh lime juice, but due to its ubiquitous popularity, you will often find bars using various unfortunate shortcuts to make them quicker, but sacrifice the quality in doing so.
Garnish: Mint sprigs sprinkled with powdered sugar.
Add the syrup and mint to a mixing glass.
Use a muddler to lightly press the mint and form a mint flavored syrup.
Add ice, lime juice, rum, and one half of a lime shell (quartered).
Shake well, and then strain into an ice filled pint glass.
Top with soda.