You'll need an ice cream maker for this recipe. It should be prepared ahead of time according to the manufacturer's directions.
In a small saucepan over medium heat, whisk together the water and sugar. Heat for 5-7 minutes until the sugar fully dissolves.
2 cups water, 2 ½ cups granulated sugar
Stir in the lemon peel, and remove from heat. Let the mixture steep for 10-15 minutes.
2 tablespoons lemon peel
Pour the mixture through a mesh sieve to remove the peel. Then stir in the lemon juice.
2 cups fresh lemon juice
Cover and chill for 3-4 hours or until very cold.
Pour the chilled mixture into the prepared ice cream maker, and use the sorbet function if available. If not, churn the mixture until it resembles soft serve.
Transfer the sorbet to a freezer-safe container, and freeze for at least 4-6 hours to set.