Start by zesting four lemons finely using a microplane, then squeeze out all the juice until the lemons feel light and dry in your hand.
Dissolve the sugar in a saucepan with hot water, stirring until it’s completely clear and the sugar has dissolved. Let the syrup cool to room temperature.
Pour the cooled syrup into a mixing bowl, then add the freshly squeezed lemon juice and the lemon zest. Mix well, and if desired, add a splash of vodka and muddle in some chopped herbs for extra flavor.
Gradually pour in cold filtered water, stirring gently to combine. The mixture should be bright yellow and fragrant with citrus aroma.
Transfer the mixture into a freezer-safe container and freeze for at least 4 hours, or preferably overnight, until firm and icy.
Once frozen, scoop the sorbet into bowls. Use a fork or spoon to scrape and crack the icy surface, revealing the crunchy, textured interior.