Ingredients:

1 Lime
3 Of Fresh Mint
1 Sugar
1 White Rum
1/3 Sparkling Water

Directions:

Squeeze juice from both lime halves into a 12-ounce highball glass, then add lime halves.
Add mint and sugar and crush mint with back of a spoon until sugar is dissolved.
Add rum and stir.
Add ice, then top off drink with sparkling water and stir well.