Ingredients:
500ml fresh orange juice
juice of 1 lemon
250ml water
250ml sugar
finely-grated zest of 1/2 orange
Method:
Add the sugar and water to a saucepan. Heat gently until the sugar dissolves then bring to a boil and immediately take off the heat then set aside to cool. When the syrup solution is cold mix-in the orange and lemon juice and orange zest then pour the mixture into the bowl of an ice cream machine and churn according to the manufacturer's instructions.
Alternatively, if you don't have an ice cream making machine, pour the mixture into a non-metallic freezer-proof dish then cover with a lid and place in the freezer. Freeze until the sorbet is almost firm (but still a little liquid). Cut the sorbet into chunks and place in a blender. Process until smooth then transfer the sorbet back into the dish and freeze again until almost firm.
Once again chop the sorbet into pieces and process until smooth. This gets rid of all the ice crystals and makes the sorbet very smooth, which is what you want. Return to the freezer-proof dish and freeze completely. To serve, allow the sorbet to soften for 5 to 10 minutes at room temperature then spoon into dessert glasses and serve, garnished with a sprig of fresh mint.