Hull and halve the strawberries before freezing them for two hours.
Pulse the berries and sugar for a few seconds in a food processor or blender until the fruit breaks up.
Add the water and lemon juice, then process until smooth.
Strain the mixture to remove the pips and any other bits.
Add the sorbet mixture to an ice cream maker and churn until hardened.
Scoop into a container and freeze until fully hardened.