Using a grinder or a food processor, (not a blender) grind the cranberries and alternate with chunks of orange and lemon, including the rinds.
Add sugar to the mixture. Mix well.
This is best if made about 2 days ahead of time and kept refrigerated. (Gives the flavors time to blend well!)
**Mom says that a grinder works best, but you can use a food processor (just pulse it) if you take care not to let it turn to mush. The idea is to have a coarse "relish" consistency.
This recipe is not only delicious, but really looks pretty.