200g Caster Sugar
15g Mint Leaves
25g Grated Lime Zest
235ml Freshly Squeezed Lime Juice
355ml Citrus Flavoured Sparkling Water
30ml Rum (Optional)
Heat the water, sugar and mint leaves in a pan over a medium heat gently stirring until the sugar melts then let boil for 3-5 minutes so that the mint flavour is released. Sieve out the mint leaves and let the sugar mixture cool. To this add the lime juice, lime zest and sparkling water giving it a good stir add the rum now as well if you are using it.
Place the mixture in a Pyrex dish and put in the freezer going back every 30 mins to an hour to stir it around so it doesn't freeze solid. (Or if you have an ice cream maker follow the manufacturers instructions) After 3-4 hours in the freezer you should have a good sorbet consistency.
Once set serve with a spring of mint or a slice of lime and save any remaining sorbet in an air tight container in the freezer.