Mix all the ingredients together. Pour into gallon freezer bags or ice cream buckets. Freeze.
When ready to serve pull out of freezer with enough time to be slushy, but not totally thawed (about 1-2 hours).
*Eileen's Notes: It takes a long time (an entire day) for the coffee to freeze. I recommend using ice cream buckets (if you have them) instead of Ziploc bags to freeze it in. Some of my adult friends like it with a shot of Kahlua added as well. You can substitute coffee creamer (any flavor) for the half & half.