Wash hands thoroughly, lathering with soap and rinsing under running water, before beginning the recipe.
Place fruit in a small saucepan over medium heat. Cook for about 10 minutes, mashing the fruit with a spoon or potato masher, until it is soft and bubbling, and some of the liquid released by the fruit has evaporated. (You should be able to see a clear mark on the bottom of the pan when you drag a spoon or spatula through the cooked berries.)
Remove from the heat and taste. Add maple syrup or another sweetener to your liking depending on the sweetness of the fruit.
Stir in the chia powder or seeds, the lemon juice, zest, and cinnamon, if using. Let cool for five minutes before stirring one more time.
Jam is ready to enjoy! Transfer to a container and store in the refrigerator for a week or two, or keep it in the freezer for up to 3 months.
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Notes
Note: If you want to turn your chia seeds into powder, you can grind them in a spice grinder, a clean coffee grinder, or a food processor.