In a medium-sized saucepan, combine the fresh blueberries with 1 cup of water. Heat over medium flame, bringing the mixture to a gentle simmer. Allow it to cook for about 5-7 minutes, or until the blueberries have softened and burst.
Once the blueberries are softened, remove the saucepan from the heat and let it cool for a few minutes. Using an immersion blender, puree the mixture until it reaches a smooth consistency.
If you prefer a smoother popsicle texture, pass the blueberry puree through a fine-mesh sieve over a bowl, discarding any solids left behind.
In a spacious mixing bowl, combine the smooth blueberry puree, freshly squeezed lemon juice, honey (or agave syrup), lemon zest, and a pinch of sea salt. Stir thoroughly until the honey is fully dissolved.
Carefully pour the mixture into popsicle molds, ensuring to leave a small gap at the top to accommodate expansion during freezing.
If your popsicle molds require sticks, insert them at this stage.
Transfer the filled molds to the freezer and allow them to freeze for a minimum of 4-6 hours, or until they are completely solid.
To release the popsicles, run warm water over the outside of the molds for a few seconds. Gently tug on the sticks to ease the popsicles out without breaking.
Notes
Serve on a colorful platter or in a tall glass filled with ice. Garnish with whole blueberries and lemon slices for extra flair.