What you need:

✔ 1 liter of dry red wine
✔ 50 ml rum
✔ 2 orange slices
✔ 2 squeezed oranges
✔ 7 cloves
✔ 2 cinnamon sticks
✔ 1 star anise
✔ 50 g rock sugar

Combine the red wine, spices, orange slices, and freshly squeezed orange juice in a saucepan and heat over low heat, but do not let it boil! Then add the rum and sugar and heat briefly again. Strain the spices and orange slices and serve the mulled wine immediately!