Note: I haven't tried this yet, so I can't vouch for it. When I do try it I will likely leave out the chocolate. We'll see.
1 to 1.5 cups coffee... pour into an ice cube tray and freeze
2 cups milk (you can use skim.)
1/4 cup sugar
1/4 cup chocolate syrup (the reduced-sugar works fine.)
Combine all in a blender, pulse until frothy, and enjoy!
Thanks to Amy's Cooking Adventures.