Ingredients

100g blueberries
3 lemons
chopped
2 tbsp granulated sugar
2 mint sprigs
leaves picked
350ml white rum
600ml sparkling water

Method
step 1
Put the blueberries, lemons and sugar in a jug and muddle. Bruise the mint leaves and add them to the jug with lots of ice. Pour over the rum and sparkling water and stir together.