Juice of 1 lime

1 tsp granulated sugar

Small handful mint leaves

60ml white rum

Soda water, to taste

Extra mint leaves to serve.

Place mint leaves, sugar and lime juice into a glass. Using a muddler, crush to release mint oils and lime juice. Do not strain the mixture.

Fill the glass almost to the top with ice. Pour in rum, stirring with a long handles spoon and top with soda water.

Stir, taste, and add more sugar if desired.

Garnish with mint and serve.