Photo by floodkoff

Ingredients
3 fresh mint sprigs
2 tsp sugar
3 tbsp fresh lime juice
1 1/2 oz light rum
club soda

Method - The Procedure
In a tall thin glass, crush part of the mint with a fork to coat the inside. Add the sugar and lime juice and stir thoroughly. Top with ice. Add rum and mix. Top off with *chilled* club soda (or seltzer). Add a lime slice and the remaining mint, and serve.