Four ingredients and some elbow grease, and you've got a great way to capture the summery flavor of fresh blackberries for the rest of the year.
Combine lemon and blackberries. Bring fruit to boil, crushing with a masher.
Add sugar and pectin and bring to a boil for a minute.
Remove from heat.
Fill jars with jam and proceed per canning instructions.
Yield: 6 cups
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