The fresh cranberries are tart, quite tart, so need some sweetness to balance them in this salsa. For that reason we are adding some sugar. The apple too helps bring some sweet balance to the cranberries. Cranberries are only in season for a short time in the fall. Once they appear in the supermarket, fresh in bags, snatch them up while you can! They will last frozen for a few months, but even then, after a while they will begin to get a bit iffy, so fall really is the time to enjoy whole cranberries. Store chilled in an airtight container until ready to serve. Serve with chips or as a side to pork, chicken, turkey, or steak. You can also place a dollop over a cracker that has been spread with cream cheese for an appetizer.