1In a medium saucepan, combine the water and sugar.
Heat the mixture over medium heat, stirring constantly, until the sugar is completely dissolved.
Remove the saucepan from the heat and let the syrup cool to room temperature.
Once the syrup is cool, stir in the lemon juice and lemon zest.
Pour the mixture into an ice cream maker and freeze according to the manufacturer's instructions.
If you don't have an ice cream maker, pour the mixture into a shallow dish and place it in the freezer.
Every 30 minutes, stir the mixture with a fork to break up any ice crystals until the sorbet is fully frozen and smooth.
Serve the lemon sorbet in chilled bowls or glasses and enjoy!