Generally speaking, freezer jam has much less sugar than other jams and will be a little thinner. Many people believe that it actually tastes more vibrant, too, insisting that when the fruit is boiled down, some of its flavor is lost.
A few tricks of the trade: store/freeze in small containers so you can enjoy small amounts without worrying about it going bad (never a problem in my household), and use superfine sugar which dissolves without a heat source much more successfully than traditional granulated sugar.
Once you try freezer jam, chances are you'll never turn back. You'll stare at fruit differently at the market and envision it all bottled up in little jars for the rest of the year.
Try a Recipe:
• Freezer Jam (Basic Recipe) - Bitten Word
• Strawberry Freezer Jam - Make and Takes
• Peach Freezer Jam - Christie's Corner
• Nectarine Raspberry Freezer Jam - Simple Bites
• Pear Cherry Freezer Jam - The Prepared Pantry
Related: On Small and Unmarked Jars of Jam