Limoncello, the Italian lemon liqueur, is traditionally thought to have been invented about a century ago in southern Italy and today is enjoyed around the world.
2 cups (500 ml) water
1 cup (266 grams) granulated sugar
1/2 cup limoncello
1 cup fresh lemon juice (from about 5 lemons)
Lemon zest from two lemons
Sprig of mint (optional).
Mix the water and sugar into a medium saucepan. Bring this mixture to the boil, stirring regularly, until the sugar is dissolved and you are left with a syrup. Transfer into dish, add the lemon juice, zest and limoncello. Cover and freeze for 3 hours.