Strawberry & pink grapefruit granita

Instructions

1. Reserve 6 strawberries for decoration. Put the remaining strawberries into a blender with the grapefruit juice and sugar. Blend until smooth. (You may have to do this in batches).
2. Tip the mixture into an ice-cream maker and follow the manufacturers instructions to freeze the mixture. Alternatively, tip into a freezer container and freeze for about 1-2 hours. Stir with a fork to break up the ice crystals, then freeze again for another hour or two. Repeat the stirring, then freeze until solid.
3. Remove the container from the freezer about 25 minutes before you wish to serve, so that you can break up the granita with a fork. Scoop into chilled glasses or bowls and serve immediately, decorated with the reserved strawberries and sprigs of mint.