Mix together the berries in a plastic container and add the flesh, juice and zest of the orange.
Stir in the sugar.
Add the 3 rose geranium leaves and make sure they are covered by the juice/berry mixture.
Cover the box and leave in the fridge overnight for the flavours to develop.
Next day remove the geranium leaves and disscard.
Pour the chilled mixture into an icecream machine and process.
Or if you don't have an ice cream machine just pop it in the freezer for 2 hours, remove and fork around to break up ice crystals and put back in the freezer. Do this again an hour later and then freeze for 2 hours.