Peel and chop fresh pineapple into small chunks, ensuring all hard bits are removed.

In a high-speed blender, combine chopped pineapple, juice of ¼ lemon, and two cups of water. Blend on high for about 30 seconds until smooth.

Pour blended mixture through a fine mesh sieve into a bowl or pitcher, pressing down with a spatula to extract juice.

Fill glasses with half a cup of ice and pour the strained mixture over it.

For garnish, dip glass rims in water and then in sugar. Optionally grill pineapple slices and add them along with fresh mint.

Serve immediately for the best flavor.