Smash your berries lightly using the back of a wooden spoon or potato masher.
Transfer the berries to a large pot and stir in both the lemon juice and pectin. Bring to a boil stirring consistently to avoid any burning.
Stir in the sugar and return to a boil. Allow to cook for 3 minutes making sure to continue stirring. You want the jam's temperature to reach 220 degrees.
Place into sterilized jars and follow proper canning instructions.
Notes
*We used 4 cups of sugar and thought it was plenty sweet but adjust according to your preference.