3to 4 cups(750 mL to 1 L/about 17 ounces/475 g) frozen strawberries, raspberries, pitted sweet cherries, or blueberries
1/4cup(60 mL) pure maple syrup, or to taste
Dash of fine sea salt
2tablespoons(30 mL) chia seeds
1/2teaspoon(2 mL) pure vanilla extract
1/2teaspoon(2 mL) pure vanilla bean powder, or 1 large vanilla bean, split lengthwise and seeds scraped out
Squeeze of fresh lemon juice
Instructions
In a medium pot, stir together the berries, maple syrup, and salt until combined. Bring to a simmer over medium-high heat and cook for 5 to 7 minutes, until the berries have softened (they will release a lot of liquid during this time).
Reduce the heat to medium and carefully mash the berries with a potato masher until mostly smooth. The jam will still look very watery at this point, but this is normal!
Add the chia seeds and stir until combined. Simmer over low-medium heat, stirring frequently (reducing heat if necessary to avoid sticking) for 8 to 15 minutes more, until a lot of the liquid has cooked off and the mixture has thickened slightly.
Remove from the heat and stir in the vanilla extract, vanilla bean powder, and lemon juice (if using). Transfer the mixture to a bowl and refrigerate, uncovered, until cool, at least a couple of hours. For quicker cooling, pop the jam into the freezer, uncovered, for 45 minutes, stirring every 15 minutes. The chia seed jam will keep in an airtight container in the fridge for up to 2 weeks. It also freezes well for 1 to 2 months.
Notes
For the Strawberry-Vanilla Chia Seed Jam: Use 3 1/2 cups (875 mL/about 17 ounces/475 g) frozen strawberries, 1/4 cup (60 mL) pure maple syrup, a dash of salt, 2 tablespoons (30 mL) chia seeds, 1 teaspoon (5 mL) fresh lemon juice, and 2 seeded vanilla beans or 1/2 teaspoon (2 mL) pure vanilla bean powder. For the Raspberry-Almond Chia Seed Jam: Use 2 1/2 cups (625 mL/ 10 ounces/300 g) frozen or fresh raspberries, 1/4 cup (60 mL) pure maple syrup, 2 tablespoons (30 mL) chia seeds, 1/4 teaspoon (1 mL) pure almond extract, and a pinch of fine sea salt.