01 - Combine blueberries, sugar, lemon juice, lemon zest, and water in a small saucepan. Cook over medium heat, stirring occasionally, until blueberries burst and sugar dissolves completely, approximately 5 minutes.
02 - Remove saucepan from heat and allow the mixture to cool for 10 minutes before processing.
03 - Transfer cooled mixture to blender or food processor. Blend until completely smooth and uniform in texture.
04 - Pour blended puree through a fine-mesh sieve into a clean bowl, pressing with a spoon to extract liquid. This removes skins and seeds for a smoother finished sorbet.
05 - Pour strained mixture into a shallow, freezer-safe container, spreading evenly to promote quick freezing.
06 - Freeze for 4 hours total, stirring vigorously with a fork every hour to break up ice crystals. This creates a smoother, creamier texture.
07 - Let sorbet sit at room temperature for 5-10 minutes to soften slightly before scooping. Serve immediately.