Clean the blueberries, remove any stems.

Get all your ingredients and equipment ready.

Measure out a cup of blueberries (assuming they are fresh), place them in a strainer, and rinse thoroughly with lukewarm water to remove any pesticides or other debris. Do this a total of four times, so you have four clean cups of blueberries.

Place all the ingredients in the pan and cook over medium-high heat. Once the blueberries start to burst, turn the heat down to medium. You must stay with the pan and watch to make sure they do not begin to burn and stir constantly. Do not place a lid over the pan. It's highly unlikely the blueberries will splatter out of the pan when they burst. However, they will burn quickly if covered.

Once, all the berries have broken down. It takes about 8 to 10 minutes to remove the pan from the stove and stir the berries.

Let the berries cool for a few minutes (up to 5 minutes)

Pour the berry mixture into the blender and blend until smooth, about 5 minutes. Do not blend any longer. You do not want creamy jam.

Pour the jam into the glass jar. Use the spatula to help remove the mixture from the sides of the blender.

Let the jam cool before covering it with the lid.