I've been on a crusade to use all the berries I have in my freezers, so I made 2 batches of jam this weekend. The first was from only blueberries, the second was from blueberries with some raspberries thrown in. Both turned out tasty. I used Pomona Pectin again, that stuff is great. One box makes several batches, so far, I've made 4 batches on the same box. I probably have enough left for at least another 2-3.