1. In a medium saucepan bring the port wine to the boil with the cloves and orange juice. Reduce to half.
2. Add the sugar and let it all bubble for another 5-7 minutes.
3. Add the onions and boil in the syrup under tender. Test the onions by inserting a small pairing knife.
4. Place the onions onto a serving dish of your choice alongside the Castello® Double Cream Brie. Drizzle the remaining syrup over the top.