To make the coffee liquor, combine Everclear with ground coffee beans and whole coffee beans in a jar that can be closed and is air-tight. Swirl around to stir and leave at room temperature for at least 2 days, but preferably 5. Give it a little shake every day.
When you are ready to make the drink, combine the drink ingredients in a blender and blend until ice is chopped and the drink is slushy.
Pour evenly between two glasses and serve immediately.