Directions

1. Prepare jars, lids, and a boiling-water canner according to current canning guidance.
2. Combine berries and lemon juice in a large heavy pot.
3. Stir in pectin.
4. Bring to a full rolling boil over high heat, stirring constantly.
5. Add sugar all at once and stir to dissolve.
6. Return to a full rolling boil and boil hard 1 minute.
7. Remove from heat and skim foam if needed.
8. Ladle into hot jars, leaving 1/4-inch headspace.
9. Apply lids and process in a boiling-water canner according to jar size and altitude.
10. Let jars cool undisturbed and check seals.