Orange Berry Cooler

Directions

1. 1
   In a blender blend berries, orange juice, 1/2 cup sugar, and lime juice until smooth.
2. 2
   Force puree through a fine sieve into a large measuring cup or bowl, pressing hard on solids.
3. 3
   Chill puree, covered, until cold and stir in additional sugar.
4. 4
   (Puree keeps, covered and chilled, 2 days.)
5. 5
   Fill tall glasses with ice and add enough berry puree to fill each glass by three quarters.
6. 6
   Top off drinks with seltzer water or club soda and stir well.