Step 1

In a small saucepan over medium heat, add blueberries and lemon juice. Cook occasionally, stirring until most of the blueberries have popped, approximately 7 minutes. Remove from heat, pour through a fine wire-mesh strainer into a large measuring cup, and use the back of a spoon to squeeze out the blueberry puree.

Step 2

Pour the blueberry mixture into a pitcher. Add water and sugar. Mix well until the sugar dissolves. Chill until ready to serve.