Prepare the fresh pineapple by peeling and cutting it into manageable chunks.

In a smoothie maker, combine the chopped pineapple, lemon juice, and water. Blend on high until smooth.

Using a fine mesh sieve, strain the blended mixture into a bowl or pitcher.

Fill glasses with ice cubes and pour the sieved pineapple mixture over the ice.

Garnish with fresh mint leaves and serve immediately.

For a special touch, consider decorating glass rims with sugar.