I use to make this all the time back in the early 80's around the holidays to have on hand and give as gifts. 'Tastes like store bought'. Super EZ to make! Then just add half & half or milk, even 2% milk if you like over ice and it's good over ice cream too.
As a Smoothie add a cup of ice to cup of Kahlua and milk in blender, blend till smooth.
I've had this recipe scratched on a small piece of paper for so many years I don't remember where it came from.