Steps
- Finely grate the zest from 4 lemons. Squeeze enough lemons to measure 150ml of fresh lemon juice.
- Bring 1 liter of water and 150g of sugar to a boil. Simmer for 2 minutes, stirring until the sugar dissolves.
- Add the lemon juice and zest. Remove from the heat, cover, and cool for 20 minutes.
- Strain into shallow freezer-safe containers and cool to room temperature. Freeze for several hours, until partly frozen.
- Leave at room temperature just until the mixture can be broken into chunks. Pulse in a food processor until it resembles soft snow.