Blueberry Granita

Directions

1. 1
   Blend the blueberries and sugar in a food processor until smooth; strain through a fine-mesh strainer, pressing with a wooden spoon to separate the blueberry puree from any chunks of skin or seeds.
2. 2
   Stir the strained blueberry puree, water, and lemon juice together in a shallow glass baking dish or tray. Place the dish in the freezer; scrape and stir the blueberry mixture with a fork once an hour until evenly frozen and icy, about 4 hours. Scrape to fluff and lighten the ice crystals; spoon into chilled glasses to serve.