1⁄2 Cup (8 tbs), cold (See Coffee Float Recipe, Preceding)
Pour milk into ice-cube tray and freeze until solid, at least 4 hours or up to 1 week (cover when solid).
In a blender or food processor, combine cold coffee and frozen milk cubes; whirl until smoothly blended.
Pour into chilled glasses.
Add sugar to taste.
Sprinkle with cocoa and cinnamon, if desired.