Place the fresh pineapple chunks into the blender and blend until smooth, about 30 seconds, until the mixture is bright yellow and slightly frothy.
Add a handful of fresh mint leaves, freshly squeezed lime juice, and 2 tablespoons of sugar to the blender.
Pulse the blender briefly to mix everything together, just until the mint is incorporated but not over-blended—this preserves some of its delicate aroma.
Taste the mixture and add more sugar if desired, blending again briefly to combine.
If the mixture seems too thick, add a splash of water or coconut water and blend gently until smooth and pourable.
Pour the pineapple mint mixture into popsicle molds, leaving about a quarter inch at the top to allow for expansion.
Insert the sticks firmly into each mold and place them in the freezer. For the best results, freeze uncovered for 1 hour, then cover loosely with foil.
Freeze for at least 4 hours or overnight until completely solid and firm, with a vibrant, icy appearance.
To serve, run warm water over the outside of the molds for 10 seconds to loosen the popsicles, then gently pull them out.
For the perfect finishing touch, let the popsicles sit at room temperature for 2 minutes before enjoying their bright, refreshing flavor.