You can party with a mojito and never feel guilty.

2 Sprigs Fresh Mint
3 Wedges Fresh Lime
Sugar Substitute
Crushed Ice
2 Ounces White Rum
6 Ounces Club Soda

Muddle the mint sprigs and lime wedges together with a sugar substitute in the bottom of a tall glass. Once the ingredients are well mixed, fill the glass with ice. Add white rum and club soda and stir well.