Step 1

Put the red wine, cinnamon, star anise, cloves, lemon zest and sugar in a large pan. Cook on a low heat for 10 mins.

Step 2

Remove from the heat and cool, leaving to infuse for about 30 mins.

Step 3

To serve, heat without boiling, stir in the sloe gin (if using, see tip below) and pour into mugs or heatproof glasses.