Begin by removing the leaves of the berries. Try not to remove too much of the fruit itself.
Slice each berry into 4 pieces. Add to a mixing bowl.
Add in the sugar. Allow the berries to macerate for 15 minutes.
Smash the berries with a potato masher or large spoon for a chunky jam. For a more smooth jam you can put the berries into a blender or food processor, or hit them with an immersion blender to smooth out.
Place the berries into a wide pot or pan and bring to a boil. Stir in the pectin. Allow to simmer for 5-10 minutes until the jam begins to thicken.
You can test if it's set up by putting a small amount on plate and placing the place in the freezer for 1 minute. If the jam doesn't move or only moves slightly when the plate is turned, the jam is finished.
Remove from the pan and pour into 2-4oz jars or 1 8oz jar. Place in the fridge. Enjoy within a month, longer if you put in the freezer.
Notes
This is NOT a canning jam recipe. It's meant to be stored in the fridge or freezer only.