Before you begin, ensure all your ingredients are chilled for the best cold and refreshing results. Gather your frozen pineapple chunks, pineapple juice, coconut milk, optional sweetener, ice, and garnishes. Prepare your serving glasses by chilling them in the freezer for a few minutes; this helps keep your drink colder longer.

Carefully add the frozen pineapple chunks and the optional ice cubes to a high-speed blender. Layer the pineapple at the bottom to ensure smooth blending and prevent ingredients from getting stuck.

Pour in the chilled pineapple juice and the creamy full-fat unsweetened coconut milk over the frozen ingredients. If you prefer a sweeter drink, add 1 to 3 tablespoons of brown sugar or agave nectar at this stage. Start with less and add more if needed.

Secure the blender lid and blend on high speed until the mixture is completely smooth and creamy. Scrape down the sides with a spatula if necessary to ensure all ingredients are fully incorporated. Continue blending until no ice or pineapple chunks remain.

Taste your virgin piña colada to check for sweetness and consistency. If you desire a sweeter drink, add a little more brown sugar or agave nectar and blend again briefly. For a thicker consistency, add a few more frozen pineapple chunks; for a thinner drink, add a splash more pineapple juice.

Pour the freshly blended virgin piña colada into your pre-chilled glasses. Garnish each glass with a fresh pineapple wedge or a vibrant pineapple leaf, and a classic maraschino cherry for an extra touch of tropical flair. Serve immediately and enjoy!