Begin by peeling and chopping the fresh pineapple into chunks.

In a smoothie maker, combine the prepared pineapple chunks, juice of one lemon, and a cup of water. Blend until smooth.

Pour the pineapple mixture through a fine sieve into a large bowl to extract juices.

Prepare your glasses by dipping the rims in water, then lightly in sugar.

Fill each sugar-rimmed glass with ice cubes.

Pour the sieved pineapple mixture over the ice in each glass.

Garnish each mocktail with a sprig of fresh mint.