Prepare the Strawberries: Wash, hull, and halve the strawberries. Use fresh or frozen berries based on availability.
Cook the Strawberries: Add strawberries and water to a saucepan. Cook over medium heat for 8–10 minutes.
Mash the Mixture: Use a masher or spoon to break down the berries into your desired jam consistency.
Sweeten the Jam: Add erythritol and lemon juice. Stir to dissolve the sweetener fully into the hot mixture.
Add Chia Seeds: Turn off the heat. Stir in chia seeds and let the mixture cool slightly on the stove.
Rest and Thicken: Let the jam sit for 30 minutes. Chia seeds will naturally thicken the jam during this time.
Store the Jam: Transfer the cooled jam to a clean, airtight glass jar. Refrigerate and use within 10 days.