Mason Jars (five ½-pint jars OR one ½-pint jar + two pint jars), or other freezer safe containers
Instructions
Remove stems from strawberries, then roughly chop.
Place strawberries in a large bowl, then use a potato masher to crush them. (Or pulse berries in a food processor.)
Use a dry measuring cup to measure out exactly 2 cups crushed strawberries. (If you have extra berries, reserve for another use.)
Stir sugar into strawberries, mixing well. Let stand for 10 minutes, stirring occasionally.
After 10 minutes is up, combine pectin and ¾ cup water in a small pot. Bring mixture to a boil on high heat, stirring constantly. Boil for 1 minute, stirring constantly, then remove from heat.
Mix hot pectin into strawberry mixture, then continue stirring for 3 minutes, or until the sugar is totally dissolved. (This may take longer than 3 minutes.)
Transfer jam to jars, leaving ½-inch of headspace at top. Cover with lids.
Let jam sit at room temperature for 24 hours, or until set.
Once jam is set, refrigerate for up to 3 weeks, or freeze for up to 1 year. Enjoy!
Notes
I used about 1 pound 3.8 ounces strawberries (562 grams) to make this recipe. If you're not sure how much to buy, err on the side of buying extra. If you have leftovers, you can always use the berries for another recipe.Making Freezer Jam is easy, but it is something of a science. It's important to follow all directions closely and exactly as written, measure carefully, and do not make any substitutions.Jam is considered "set" when it has thickened and is no longer runny. Just keep in mind that Freezer Jam does not get as thick as commercially made jam.Sure Jell Pectin is easy to find in most U.S. grocery stores (look for it in the baking aisle) or online. There are different brands of pectin, and they are not interchangeable. If you purchase another brand, use this recipe as a guide, but you should follow the directions included with the package.If you'd like to make this jam with less sugar, use Sure Jell Less Sugar Pectin instead, and follow the directions on the package.Make sure to read the info before this recipe card for step-by-step photos, plus tons of helpful tips, variations, and more!