How to Make It
Bring the cranberries, brown sugar, apple cider, ginger, and black pepper to a boil in a large saucepan over medium-high heat, stirring often. Reduce heat to medium-low, and simmer, stirring occasionally, until cranberries pop and mixture thickens, 12 to 15 minutes. Remove from heat, and cool to room temperature, about 30 minutes.
Stir in pineapple, celery, and apple. Transfer to a serving bowl; cover and chill 4 to 24 hours.