1 1/2 cups cold, strong, brewed coffee
1/3 cup chocolate syrup
1/3 cup nonfat dried milk

Pour 1 1/4 cups coffee into an ice cube tray or trays and 
freeze until solid, at least 3 hours.

Add to a blender (through opening in lid) or food processor with motor running,
 the frozen coffee cubes, chocolate syrup, nonfat dried milk and 1/4 cup cold
 coffee. Whirl until mixture is a thick slush; if thicker then you like, add a little
 more cold coffee or skim milk. Pour into tall glasses.

TIP: Make the frozen coffee cubes from left over coffee and you will 
have a stock in your freezer when needed.