Tip the cranberries into a large pan with the orange juice and sugar, and bring to the boil. Turn down the heat to medium and bring to a gentle simmer, then continue to cook for 10 mins until the cranberries become plump and sticky.

Tip the mixture into a blender, blitz to a purée, then return to the pan and simmer over a low heat for 5 mins until thick and jammy. Leave to cool and tip into a serving dish or jar. Will keep in the fridge for four days or freezer for up to six months.