This sounds a bit strange, but I promise it is super yummy. Pretty inexpensive to make (granted you already have the spices on hand), but special enough for holiday gatherings.
Combine in a small saucepan and heat over medium high:
1 can jellied cranberry sauce
1/2 c sugar
1/4 c vinegar
1 tsp ground ginger
1 tsp ground mustard
1/4 tsp ground cinnamon
1/8 tsp black pepper
In a small bowl, whip together 1 Tb flour and 1 Tb cold water, then stir into the other ingredients. Bring to a boil, reduce heat, and let simmer for about 5 minutes, stirring frequently. Remove from heat, then cover and chill for at least 1 hour before serving. Great with pretzel sticks!