Possibly the best mulled wine we've ever had was at tiny Shoreditch bar Casita - which happens to be one of our favourite haunts. They were kind enough to share the recipe with me, and here it is. This is perfect for a party, as it makes a large batch.
Glass: Jam jar
Add all ingredients to a large pan and heat over a medium heat, stirring occasionally.
When you're satisfied with the temperature (be patient, it will take some time)
Start ladling it out into the jars - or other receptacles if you prefer
Garnish with an orange wedge with two cloves stuck in it