Wash fruit. Quarter apples and cut into chunks. Cut oranges, with rinds intact, into chunks. Remove seeds.

Insert steel blade into food processor bowl and chop cranberries in two batches. Transfer to a large mixing bowl. Process apples and oranges, a few at a time, until finely chopped but not puréed. Empty each batch into bowl with cranberries. Add sugar, salt and liqueur. Stir to blend.

Place in covered container and refrigerate. Keep relish pressed below juices. A lovely red color develops within a few days. Keeps up to one month refrigerated.