Wash the strawberries thoroughly and remove the green tops.
Slice the strawberries and place them in a bowl.
Sprinkle the sugar over the strawberries and mix gently.
Let the strawberries sit for about 10 minutes to release their juices.
In a saucepan, combine water and a pinch of salt, then bring to a boil.
Remove from heat and add the strawberries and their juices to the saucepan.
Stir in the lemon juice for extra flavor.
Use a blender to puree the mixture until smooth.
Pour the puree into a shallow dish and cover it with plastic wrap.
Freeze the mixture for about 4 hours, stirring every hour to break up ice crystals.