1. In a Collins glass pour the squeezed lime, fresh lime juice, simple syrup, rum and fresh mint leaves.
2. Using a muddler, muddle everything for 1 minute.
3. Top it with crushed ice, stir with bar spoon, muddle with the spoon.
4. Pour soda water right to the top and stir.
5. Garnish with mint leaves and lime slice, sprinkle raw sugar.