Pineapple sorbetto served in its natural fruit shell.
Cut the top off each pineapple and hollow out the insides, being careful not to break the shell. Set aside the pineapple flesh.
In a saucepan, combine water and sugar. Heat over medium heat until the sugar is dissolved. Remove from heat and let cool.
In a blender, combine the reserved pineapple flesh, lemon juice, pineapple juice, and the cooled sugar syrup. Blend until smooth.
Pour the pineapple mixture into a shallow dish and place it in the freezer. Stir every 30 minutes until it reaches a sorbet-like consistency (about 3-4 hours).
Once the sorbetto is ready, scoop it into the hollowed-out pineapple shells. Garnish with fresh mint leaves and serve immediately.