In a small pot boil water and granulated sugar on low heat, stirring constantly until the sugar dissolves completely and the mixture is clear, approximately 5 minutes. Add the peel, stir and let cool completely. (the syrup)
In a large bowl beat egg whites and powdered sugar until stiff, fold in a little at a time the lemon juice, syrup and vodka if using.
Pour into a plastic or freezer safe bowl and freeze for at least 6-8 hours, stirring 2-3 times to combine.
Before serving blend in a blender and serve immediately. Pour any left overs in a bottle, keep in freezer and shake well before serving. Enjoy!
Notes
This can also be served as a slush, instead of blending just serve.
Can I make this sorbet ahead of time?
Yes! It can be made up to a week in advance. Just let it sit at room temperature for a few minutes before serving to soften slightly.
Storage
Store leftover Italian lemon sorbet drink recipe in the freezer for up to a month and shake well before serving. You can also reblend it before serving for a creamy texture.