Mason Jars (7 half-pint, or 1 half-pint and 6 pint)
Instructions
Remove blueberry stems, then place berries in a large bowl. Mash berries into small pieces with a potato masher (or finely chop).
Measure out exactly 3 cups mashed blueberries, then add them to a large bowl. (If you have extra berries, reserve them for another use.)
Stir sugar into berries, mixing well. Let the mixture stand for 10 minutes, stirring occasionally.
After 10 minutes, combine pectin and ¾ cup water in a small pot. Bring mixture to a boil on high heat, stirring constantly. Boil for 1 minute (continuing to stir), then remove from heat.
Add hot pectin to blueberry mixture, then stir for 3 minutes, or until the sugar is completely dissolved. (This may take longer than 3 minutes.)
Transfer jam to jars, leaving ½-inch of empty headspace at top. Cover with lids.
Let jam stand at room temperature for 24 hours, or until set.
Once jam is set, refrigerate it for up to 3 weeks, or freeze it for up to 1 year. Enjoy!
Notes
Blueberries - Add the berries to your bowl in batches when mashing them, instead of all at once. That way, you'll be sure to catch them all. Also, I usually purchase a little extra fruit when making freezer jam, just in case.Follow the Recipe - For best results, make sure to measure your ingredients accurately and to follow the directions as written.Pectin - This recipe was created with Sure Jell Original Premium Fruit Pectin. If you have a different brand, follow the directions on the box, and use this recipe more as a guide.Reduced Sugar - You need to use all the sugar, other your jam will not set up properly. Avoid sugar substitutes, as well. For lower sugar jam, use Sure Jell Low Sugar Pectin instead, and follow the directions on the box.More Tips - Read the info before this card for helpful tips and step-by-step photos, recipe variations, other jam recipes, and more!