Pour a small glass of the cider into a small pan on a low heat and let it warm through for a few minutes. Add the sachets of Mulled Wine Spice, the Cinnamon Stick and the orange juice and turn the heat up. Once boiling, turn down to a simmer and leave for 5–8 minutes.
Pour into a larger pan and add the rest of cider.
Warm the liquid on a low heat. Add sugar to taste, and dissolve.
Pour into glasses or mugs and serve warm.