The freezer jams are so good as they taste like the fresh fruit because they have never been cooked. This is a yummy jam and needs to be tried. To get the best taste you need to use the wild blueberries. Once I used the big cultivated ones in the store because it was winter and I needed to make some. There was hardly any flavor except it was sweet. The wild blueberries are are so tasty. NOTE: Do not reduce the sugar or use a sugar substitute as it will not set correctly.