2. For the syrup. Pour 300ml of water into a saucepan, add the brown sugar and heat until the sugar is dissolved. Then add the orange juice, its zest, the lemon zest, star anise, cinnamon, and the split vanilla bean. Let simmer gently for 10 minutes, then let the syrup infuse until it cools down (30 minutes). Strain the syrup through a sieve.
3. Put everything in a salad bowl, pour the cooled syrup over it, and refrigerate for at least 2 hours before serving.