With a powerful blender, pulverize pineapple chunks and add coconut milk and lime juice. Mix until smooth and thoroughly combined.
If coating the glass rim, blend together 1:1 ratio of coconut sugar and fresh lime juice; dip glass rim in mixture to lightly coat.
Pour the blended drink mixture into glasses to between ½ and ¾ full, then top with chilled sparkling water or champagne/sparkling wine.
Drizzle the cherry juice over the back of a chilled spoon and into the glass.
Stir gently with a swizzle stick (don’t overmix), creating a streaked, sunset-like effect in the glass.
Garnish with a couple fresh sprigs of mint (I crush mine gently with a muddler to unleash the fragrance), and slip a lime and pineapple wedge over the rim. Aloha!