Pulse 2 chopped English cucumbers, 2 cups fresh lemon juice (about 16 lemons), 1 1/2 cups chopped fresh mint and 1 cup sugar in a blender, stirring as needed, until combined. Puree until smooth, about 1 minute. Strain through a fine-mesh sieve into a pitcher, pressing the solids with the back of a spoon. Stir in 3 cups water. Serve over ice.
Recipe courtesy of Lemonade for Food Network Magazine