In a small bowl, with a potato masher or spoon, mash 1 cup rinsed fresh raspberries (6 oz.) with 2/3 cup sugar. Let stand 10 minutes. Press through a fine strainer into a pitcher (at least 1 1/2 qt.); discard seeds. Stir in 1 cup lemon juice and 2 cups water. Taste and add more sugar if desired. Pour into tall, ice-filled glasses.
Nutritional analysis per cup.