1 Put the sugar, berries, a few sprigs of mint and a little soda water into a long drink glass. Quarter the lime, squeeze the juice into the glass and put the pieces of lime into the glass as well.
2 Crush everything with a wooden pestle.
3 Fill the glass with roughly crushed ice, stir in the rum and strawberry syrup, fill up with soda water and stir well. Serve garnished with mint.