Blend sugar, port and the 1/4 cup water and add to a stovetop saucepan. Add cranberries and bring to a boil cooking over a medium-high heat. Stir often until cranberry skins begin to split. Remove from stove and allow to cool for 15 minutes.

Pulse the cranberry port mixture into a food processor and pulse until almost pureed. Then, add orange liqueur and stir until incorporated. Place in a serving bowl, cover and chill for at least 4 hours before serving. (Can be made at least 2 days before dinner party)