Pour the wine and brandy into the slow cooker

Add the sugar

Push the cloves into the orange, distributing them fairly evenly

Thickly slice the orange (about 6 slices) and add to the slow cooker

Add the cinnamon stick

Heat on LOW for about an hour until hot, then turn to WARM

You may need to reset it if the timer expires

If you have an older slow cooker the heat settings are lower, so leave it on LOW for as long as you like

Stir before serving to ensure the sugar has dissolved

If you need to top up your mulled wine, you can heat the wine and brandy for a few minutes in the microwave (taking care not to let it boil) and add to the slow cooker with sugar