Preheat oven to 350 F. Grease 2 round cake pans.
Beat butter, sugars, salt, and baking powder till well blended.
Add the whiskey to the coffee.
Alternate adding flour and coffee/whiskey until all is incorporated.
Add eggs one at a time, beating till combined.
Pour half the batter into each greased cake pan (it will not be very deep in the pan).
Bake for 20 minutes.
Remove from oven and cool in pan for 10 minutes before transferring to wire racks to cool completely.