This is a great way to make jam because it's simple, lower in sugar, and lets the flavor of ripe fruit shine. Our method makes it a cinch to save the last of your favorite summer produce, like nectarines, plums, or berries. The key ingredient is pectin, which gives this jam the right consistency. The recipe is so easy, you might just need a second freezer!
Recipe Summary test
Quick Tips for Freezer Jamming
This recipe was tested with Ball and Sure-Jell brand pectins; look for either in the supermarketâ€™s baking aisle.
Always leave at least a 1/2-inch head space because the jam will expand as it freezes.
Make sure your fruit is ripe so the jam sets properly.
To crush fruit, chop flesh and mash with a potato masher.
This recipe also works well with berries. You'll need about 2 1/2 pounds of strawberries, blueberries, raspberries, or blackberries to make 5 cups of crushed fruit for berry jam.