Thinly peel the orange using a vegetable peeler to get as little as possible of the white bitter part. After that, cut the orange in half and squeeze it.
Transfer the orange juice and peel to a saucepan. Add the sugar, cinnamon sticks, cloves and one glass of wine (about 150 ml) and bring to a boil, constantly stirring to dissolve the sugar.
When the mixture reaches boiling temperature, add the star anise pods and the rest of the wine and keep it on the stove until it steams but does not boil.
Remove from the heat just before it reaches boiling temperature. Serve hot.
Notes
Serve this beverage hot. If you cannot serve it immediately, keep it on the lowest possible heat to prevent it from reaching boiling temperature and the subsequent evaporation of the alcohol.Pour the mulled wine through a sieve to retain spices and orange peel if not serving vin brulé immediately. Keeping the spices in the wine for too long, especially on a continuous source of heat, would infuse the beverage too much ruining its original flavour.