Raspberry Lemonade

2 (12 ounce) cans frozen lemonade concentrate, thawed
2 (10 ounce) packages frozen sweetened raspberries, partially thawed
2 to 4 tablespoons granulated sugar
2 liters club soda, chilled
Ice cubes

In a blender, combine lemonade concentrate, raspberries and sugar. Cover and process until blended. Strain to remove seeds.

In a 4 1/2-quart container, combine raspberry mixture, club soda and ice cubes; mix well. Serve immediately.

Yields 3 1/2 quarts.